diff --git a/rattail_corepos/db/alembic/versions/c61f78243ff3_add_person_extension.py b/rattail_corepos/db/alembic/versions/c61f78243ff3_add_person_extension.py
new file mode 100644
index 0000000..6c428d9
--- /dev/null
+++ b/rattail_corepos/db/alembic/versions/c61f78243ff3_add_person_extension.py
@@ -0,0 +1,51 @@
+# -*- coding: utf-8 -*-
+"""add Person extension
+
+Revision ID: c61f78243ff3
+Revises: b43e93d32275
+Create Date: 2020-03-16 16:50:55.266325
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = 'c61f78243ff3'
+down_revision = 'b43e93d32275'
+branch_labels = None
+depends_on = None
+
+from alembic import op
+import sqlalchemy as sa
+import rattail.db.types
+
+
+
+def upgrade():
+
+    # corepos_person
+    op.create_table('corepos_person',
+                    sa.Column('uuid', sa.String(length=32), nullable=False),
+                    sa.Column('corepos_customer_id', sa.Integer(), nullable=False),
+                    sa.ForeignKeyConstraint(['uuid'], ['person.uuid'], name='corepos_person_fk_person'),
+                    sa.PrimaryKeyConstraint('uuid')
+    )
+    op.create_table('corepos_person_version',
+                    sa.Column('uuid', sa.String(length=32), autoincrement=False, nullable=False),
+                    sa.Column('corepos_customer_id', sa.Integer(), autoincrement=False, nullable=True),
+                    sa.Column('transaction_id', sa.BigInteger(), autoincrement=False, nullable=False),
+                    sa.Column('end_transaction_id', sa.BigInteger(), nullable=True),
+                    sa.Column('operation_type', sa.SmallInteger(), nullable=False),
+                    sa.PrimaryKeyConstraint('uuid', 'transaction_id')
+    )
+    op.create_index(op.f('ix_corepos_person_version_end_transaction_id'), 'corepos_person_version', ['end_transaction_id'], unique=False)
+    op.create_index(op.f('ix_corepos_person_version_operation_type'), 'corepos_person_version', ['operation_type'], unique=False)
+    op.create_index(op.f('ix_corepos_person_version_transaction_id'), 'corepos_person_version', ['transaction_id'], unique=False)
+
+
+def downgrade():
+
+    # corepos_person
+    op.drop_index(op.f('ix_corepos_person_version_transaction_id'), table_name='corepos_person_version')
+    op.drop_index(op.f('ix_corepos_person_version_operation_type'), table_name='corepos_person_version')
+    op.drop_index(op.f('ix_corepos_person_version_end_transaction_id'), table_name='corepos_person_version')
+    op.drop_table('corepos_person_version')
+    op.drop_table('corepos_person')
diff --git a/rattail_corepos/db/model.py b/rattail_corepos/db/model.py
index 6f4f87e..9bf3dbf 100644
--- a/rattail_corepos/db/model.py
+++ b/rattail_corepos/db/model.py
@@ -30,7 +30,42 @@ from sqlalchemy import orm
 from rattail.db import model
 
 
-__all__ = ['CoreVendor']
+__all__ = ['CorePerson', 'CoreVendor']
+
+
+class CorePerson(model.Base):
+    """
+    CORE-specific extensions to :class:`rattail:rattail.db.model.Person`.
+    """
+    __tablename__ = 'corepos_person'
+    __table_args__ = (
+        sa.ForeignKeyConstraint(['uuid'], ['person.uuid'],
+                                name='corepos_person_fk_person'),
+    )
+    __versioned__ = {}
+
+    uuid = model.uuid_column(default=None)
+    person = orm.relationship(
+        model.Person,
+        doc="""
+        Reference to the actual person record, which this one extends.
+        """,
+        backref=orm.backref(
+            '_corepos',
+            uselist=False,
+            cascade='all, delete-orphan',
+            doc="""
+            Reference to the CORE-POS extension record for this person.
+            """))
+
+    corepos_customer_id = sa.Column(sa.Integer(), nullable=False, doc="""
+    ``Customers.customerID`` value for this person, within CORE-POS.
+    """)
+
+    def __str__(self):
+        return str(self.person)
+
+CorePerson.make_proxy(model.Person, '_corepos', 'corepos_customer_id')
 
 
 class CoreVendor(model.Base):