Tablet Signup:

When a customer signs up for rewards program on the tablet by checking in for the 1st time, a customer record is created in the loyalty rewards system using the name, phone number and email address.

Website Signup:

If the customer signs up on the website using the required email and phone number (optional), a customer record is created name, phone number and email address.

However if the customer chooses to not give their phone number on the website, a record is only created in the email database. No record is created in the rewards database, as a phone number is required.

If the same customer then uses the tablet to check in to rewards program, a customer record is created in the rewards database using the phone number and email address but a new record is not created in the email database since it already exists.