diff --git a/tailbone/templates/customers/configure.mako b/tailbone/templates/customers/configure.mako
index f465fdf5..708d0b17 100644
--- a/tailbone/templates/customers/configure.mako
+++ b/tailbone/templates/customers/configure.mako
@@ -6,6 +6,26 @@
   <h3 class="block is-size-3">General</h3>
   <div class="block" style="padding-left: 2rem;">
 
+    <b-field grouped>
+
+      <b-field label="Key Field">
+        <b-select name="rattail.customers.key_field"
+                  v-model="simpleSettings['rattail.customers.key_field']"
+                  @input="updateKeyLabel()">
+          <option value="id">id</option>
+          <option value="number">number</option>
+        </b-select>
+      </b-field>
+
+      <b-field label="Key Field Label">
+        <b-input name="rattail.customers.key_label"
+                 v-model="simpleSettings['rattail.customers.key_label']"
+                 @input="settingsNeedSaved = true">
+        </b-input>
+      </b-field>
+
+    </b-field>
+
     <b-field message="If not set, customer chooser is an autocomplete field.">
       <b-checkbox name="rattail.customers.choice_uses_dropdown"
                   v-model="simpleSettings['rattail.customers.choice_uses_dropdown']"
@@ -33,5 +53,29 @@
 
 </%def>
 
+<%def name="modify_this_page_vars()">
+  ${parent.modify_this_page_vars()}
+  <script type="text/javascript">
+
+    ThisPage.methods.getLabelForKey = function(key) {
+        switch (key) {
+        case 'id':
+            return "ID"
+        case 'number':
+            return "Number"
+        default:
+            return "Key"
+        }
+    }
+
+    ThisPage.methods.updateKeyLabel = function() {
+        this.simpleSettings['rattail.customers.key_label'] = this.getLabelForKey(
+            this.simpleSettings['rattail.customers.key_field'])
+        this.settingsNeedSaved = true
+    }
+
+  </script>
+</%def>
+
 
 ${parent.body()}
diff --git a/tailbone/templates/members/configure.mako b/tailbone/templates/members/configure.mako
new file mode 100644
index 00000000..07d67970
--- /dev/null
+++ b/tailbone/templates/members/configure.mako
@@ -0,0 +1,57 @@
+## -*- coding: utf-8; -*-
+<%inherit file="/configure.mako" />
+
+<%def name="form_content()">
+
+  <h3 class="block is-size-3">General</h3>
+  <div class="block" style="padding-left: 2rem;">
+
+    <b-field grouped>
+
+      <b-field label="Key Field">
+        <b-select name="rattail.members.key_field"
+                  v-model="simpleSettings['rattail.members.key_field']"
+                  @input="updateKeyLabel()">
+          <option value="id">id</option>
+          <option value="number">number</option>
+        </b-select>
+      </b-field>
+
+      <b-field label="Key Field Label">
+        <b-input name="rattail.members.key_label"
+                 v-model="simpleSettings['rattail.members.key_label']"
+                 @input="settingsNeedSaved = true">
+        </b-input>
+      </b-field>
+
+    </b-field>
+
+  </div>
+</%def>
+
+<%def name="modify_this_page_vars()">
+  ${parent.modify_this_page_vars()}
+  <script type="text/javascript">
+
+    ThisPage.methods.getLabelForKey = function(key) {
+        switch (key) {
+        case 'id':
+            return "ID"
+        case 'number':
+            return "Number"
+        default:
+            return "Key"
+        }
+    }
+
+    ThisPage.methods.updateKeyLabel = function() {
+        this.simpleSettings['rattail.members.key_label'] = this.getLabelForKey(
+            this.simpleSettings['rattail.members.key_field'])
+        this.settingsNeedSaved = true
+    }
+
+  </script>
+</%def>
+
+
+${parent.body()}
diff --git a/tailbone/templates/people/view_profile_buefy.mako b/tailbone/templates/people/view_profile_buefy.mako
index 6937f592..075735cc 100644
--- a/tailbone/templates/people/view_profile_buefy.mako
+++ b/tailbone/templates/people/view_profile_buefy.mako
@@ -540,19 +540,15 @@
           <b-icon pack="fas"
                   icon="caret-right">
           </b-icon>
-          <strong>#{{ member.number }} {{ member.display }}</strong>
+          <strong>{{ member._key }} - {{ member.display }}</strong>
         </div>
 
         <div class="panel-block">
           <div style="display: flex; justify-content: space-between; width: 100%;">
             <div style="flex-grow: 1;">
 
-              <b-field horizontal label="Number">
-                {{ member.number }}
-              </b-field>
-
-              <b-field horizontal label="ID">
-                {{ member.id }}
+              <b-field horizontal label="${member_key_label}">
+                {{ member._key }}
               </b-field>
 
               <b-field horizontal label="Active">
@@ -630,19 +626,15 @@
           <b-icon pack="fas"
                   icon="caret-right">
           </b-icon>
-          <strong>#{{ customer.number }} {{ customer.name }}</strong>
+          <strong>{{ customer._key }} - {{ customer.name }}</strong>
         </div>
 
         <div class="panel-block">
           <div style="display: flex; justify-content: space-between; width: 100%;">
             <div style="flex-grow: 1;">
 
-              <b-field horizontal label="Number">
-                {{ customer.number }}
-              </b-field>
-
-              <b-field horizontal label="ID">
-                {{ customer.id }}
+              <b-field horizontal label="${customer_key_label}">
+                {{ customer._key }}
               </b-field>
 
               <b-field horizontal label="Name">
@@ -1011,8 +1003,8 @@
 
 <%def name="render_profile_tabs()">
   ${self.render_personal_tab()}
-  ${self.render_customer_tab()}
   ${self.render_member_tab()}
+  ${self.render_customer_tab()}
   ${self.render_employee_tab()}
   ${self.render_user_tab()}
 </%def>
diff --git a/tailbone/views/customers.py b/tailbone/views/customers.py
index 50b93d59..02071ab4 100644
--- a/tailbone/views/customers.py
+++ b/tailbone/views/customers.py
@@ -63,16 +63,14 @@ class CustomerView(MasterView):
     }
 
     grid_columns = [
-        'id',
-        'number',
+        '_customer_key_',
         'name',
         'phone',
         'email',
     ]
 
     form_fields = [
-        'id',
-        'number',
+        '_customer_key_',
         'name',
         'default_phone',
         'default_address',
@@ -114,13 +112,16 @@ class CustomerView(MasterView):
         super(CustomerView, self).configure_grid(g)
         model = self.model
 
-        # number
-        g.set_link('number')
+        # customer key
+        field = self.get_customer_key_field()
+        g.filters[field].default_active = True
+        g.filters[field].default_verb = 'equal'
+        g.set_sort_defaults(field)
+        g.set_link(field)
 
         # name
         g.filters['name'].default_active = True
         g.filters['name'].default_verb = 'contains'
-        g.set_sort_defaults('name')
 
         # phone
         g.set_joiner('phone', lambda q: q.outerjoin(model.CustomerPhoneNumber, sa.and_(
@@ -158,7 +159,6 @@ class CustomerView(MasterView):
             g.filters['active_in_pos'].default_active = True
             g.filters['active_in_pos'].default_verb = 'is_true'
 
-        g.set_link('id')
         g.set_link('name')
         g.set_link('person')
         g.set_link('email')
@@ -485,6 +485,10 @@ class CustomerView(MasterView):
         return [
 
             # General
+            {'section': 'rattail',
+             'option': 'customers.key_field'},
+            {'section': 'rattail',
+             'option': 'customers.key_label'},
             {'section': 'rattail',
              'option': 'customers.choice_uses_dropdown',
              'type': bool},
diff --git a/tailbone/views/master.py b/tailbone/views/master.py
index 394424a2..0993ac7d 100644
--- a/tailbone/views/master.py
+++ b/tailbone/views/master.py
@@ -163,6 +163,8 @@ class MasterView(View):
 
     labels = {'uuid': "UUID"}
 
+    customer_key_fields = {}
+    member_key_fields = {}
     product_key_fields = {}
 
     # ROW-RELATED ATTRS FOLLOW:
@@ -463,6 +465,8 @@ class MasterView(View):
                 grid.remove('local_only')
                 grid.remove_filter('local_only')
 
+        self.configure_column_customer_key(grid)
+        self.configure_column_member_key(grid)
         self.configure_column_product_key(grid)
 
         for supp in self.iter_view_supplements():
@@ -561,6 +565,8 @@ class MasterView(View):
         # super(MasterView, self).configure_row_grid(grid)
         self.set_row_labels(grid)
 
+        self.configure_column_customer_key(grid)
+        self.configure_column_member_key(grid)
         self.configure_column_product_key(grid)
 
     def row_grid_extra_class(self, obj, i):
@@ -2407,8 +2413,14 @@ class MasterView(View):
             'quickie': None,
         }
 
-        key = self.rattail_config.product_key()
-        context['product_key_field'] = self.product_key_fields.get(key, key)
+        context['customer_key_field'] = self.get_customer_key_field()
+        context['customer_key_label'] = self.get_customer_key_label()
+
+        context['member_key_field'] = self.get_member_key_field()
+        context['member_key_label'] = self.get_member_key_label()
+
+        context['product_key_field'] = self.get_product_key_field()
+        context['product_key_label'] = self.get_product_key_label()
 
         if self.expose_quickie_search:
             context['quickie'] = self.get_quickie_context()
@@ -4131,6 +4143,8 @@ class MasterView(View):
         """
         self.configure_common_form(form)
 
+        self.configure_field_customer_key(form)
+        self.configure_field_member_key(form)
         self.configure_field_product_key(form)
 
         for supp in self.iter_view_supplements():
@@ -4596,6 +4610,8 @@ class MasterView(View):
 
         self.set_row_labels(form)
 
+        self.configure_field_customer_key(form)
+        self.configure_field_member_key(form)
         self.configure_field_product_key(form)
 
     def validate_row_form(self, form):
@@ -4604,23 +4620,77 @@ class MasterView(View):
             return True
         return False
 
+    def get_customer_key_field(self):
+        app = self.get_rattail_app()
+        key = app.get_customer_key_field()
+        return self.customer_key_fields.get(key, key)
+
+    def get_customer_key_label(self):
+        app = self.get_rattail_app()
+        field = self.get_customer_key_field()
+        return app.get_customer_key_label(field=field)
+
+    def configure_column_customer_key(self, g):
+        if '_customer_key_' in g.columns:
+            field = self.get_customer_key_field()
+            g.replace('_customer_key_', field)
+            g.set_label(field, self.get_customer_key_label())
+            g.set_link(field)
+
+    def configure_field_customer_key(self, f):
+        if '_customer_key_' in f:
+            field = self.get_customer_key_field()
+            f.replace('_customer_key_', field)
+            f.set_label(field, self.get_customer_key_label())
+
+    def get_member_key_field(self):
+        app = self.get_rattail_app()
+        key = app.get_member_key_field()
+        return self.member_key_fields.get(key, key)
+
+    def get_member_key_label(self):
+        app = self.get_rattail_app()
+        field = self.get_member_key_field()
+        return app.get_member_key_label(field=field)
+
+    def configure_column_member_key(self, g):
+        if '_member_key_' in g.columns:
+            field = self.get_member_key_field()
+            g.replace('_member_key_', field)
+            g.set_label(field, self.get_member_key_label())
+            g.set_link(field)
+
+    def configure_field_member_key(self, f):
+        if '_member_key_' in f:
+            field = self.get_member_key_field()
+            f.replace('_member_key_', field)
+            f.set_label(field, self.get_member_key_label())
+
+    def get_product_key_field(self):
+        app = self.get_rattail_app()
+        key = app.get_product_key_field()
+        return self.product_key_fields.get(key, key)
+
+    def get_product_key_label(self):
+        app = self.get_rattail_app()
+        field = self.get_product_key_field()
+        return app.get_product_key_label(field=field)
+
     def configure_column_product_key(self, g):
         if '_product_key_' in g.columns:
-            key = self.rattail_config.product_key()
-            field = self.product_key_fields.get(key, key)
+            field = self.get_product_key_field()
             g.replace('_product_key_', field)
-            g.set_label(field, self.rattail_config.product_key_title(key))
+            g.set_label(field, self.get_product_key_label())
             g.set_link(field)
-            if key == 'upc':
+            if field == 'upc':
                 g.set_renderer(field, self.render_upc)
 
     def configure_field_product_key(self, f):
         if '_product_key_' in f:
-            key = self.rattail_config.product_key()
-            field = self.product_key_fields.get(key, key)
+            field = self.get_product_key_field()
             f.replace('_product_key_', field)
-            f.set_label(field, self.rattail_config.product_key_title(key))
-            if key == 'upc':
+            f.set_label(field, self.get_product_key_label())
+            if field == 'upc':
                 f.set_renderer(field, self.render_upc)
 
     def get_row_action_url(self, action, row, **kwargs):
diff --git a/tailbone/views/members.py b/tailbone/views/members.py
index 28265061..955a217f 100644
--- a/tailbone/views/members.py
+++ b/tailbone/views/members.py
@@ -42,14 +42,14 @@ class MemberView(MasterView):
     is_contact = True
     touchable = True
     has_versions = True
+    configurable = True
 
     labels = {
         'id': "ID",
     }
 
     grid_columns = [
-        'number',
-        'id',
+        '_member_key_',
         'person',
         'customer',
         'email',
@@ -61,8 +61,7 @@ class MemberView(MasterView):
     ]
 
     form_fields = [
-        'number',
-        'id',
+        '_member_key_',
         'person',
         'customer',
         'default_email',
@@ -77,6 +76,13 @@ class MemberView(MasterView):
     def configure_grid(self, g):
         super(MemberView, self).configure_grid(g)
 
+        # member key
+        field = self.get_member_key_field()
+        g.filters[field].default_active = True
+        g.filters[field].default_verb = 'equal'
+        g.set_sort_defaults(field)
+        g.set_link(field)
+
         g.set_joiner('person', lambda q: q.outerjoin(model.Person))
         g.set_sorter('person', model.Person.display_name)
         g.set_filter('person', model.Person.display_name)
@@ -105,8 +111,6 @@ class MemberView(MasterView):
         g.set_filter('email', model.MemberEmailAddress.address)
         g.set_label('email', "Email Address")
 
-        g.set_sort_defaults('number')
-
         g.set_link('person')
         g.set_link('customer')
 
@@ -186,6 +190,16 @@ class MemberView(MasterView):
         if member.phones:
             return member.phones[0].number
 
+    def configure_get_simple_settings(self):
+        return [
+
+            # General
+            {'section': 'rattail',
+             'option': 'members.key_field'},
+            {'section': 'rattail',
+             'option': 'members.key_label'},
+        ]
+
 
 def defaults(config, **kwargs):
     base = globals()
diff --git a/tailbone/views/people.py b/tailbone/views/people.py
index 0a471f46..dc75b8aa 100644
--- a/tailbone/views/people.py
+++ b/tailbone/views/people.py
@@ -545,12 +545,14 @@ class PersonView(MasterView):
         return context
 
     def get_context_customers(self, person):
+        key = self.get_customer_key_field()
         data = []
         for cp in person._customers:
             customer = cp.customer
             data.append({
                 'uuid': customer.uuid,
                 'ordinal': cp.ordinal,
+                '_key': getattr(customer, key),
                 'id': customer.id,
                 'number': customer.number,
                 'name': customer.name,
@@ -582,8 +584,10 @@ class PersonView(MasterView):
             profile_url = self.request.route_url('people.view_profile',
                                                  uuid=member.person_uuid)
 
+        key = self.get_member_key_field()
         return {
             'uuid': member.uuid,
+            '_key': getattr(member, key),
             'number': member.number,
             'id': member.id,
             'active': member.active,