Messages

The customer is already pointing their phone at this standee, because that is how they pay. Enrolment costs them one extra scan at the same moment, on the same piece of card, rather than a separate step nobody would take.

The standee is the shop asking. This is the customer answering, from their own number, which is what makes it consent rather than collection.

1. 1

   You get the number

   Delivered by the customer, so the owner never types a digit and never asks for one at a busy counter.

2. 2

   It counts as consent

   Under the DPDP Act you cannot simply collect numbers and message them. A customer starting the conversation is clean opt in, with a record of when.

3. 3

   It opens the sending window

   WhatsApp only permits free-form messages for 24 hours after a customer writes to you. That scan is what makes the thank you both allowed and free.

For customers who never scan the second code, a UPI ID is very often the phone number itself, as in 9876543210@ybl. That is offered to the owner as a suggested match to confirm, never used to message someone silently, because a number picked up that way carries no consent.