This links the name, phone number, and MAC address of the phone, so you job function email database can know when the customer comes to the branch, how long they were there, and some other data, even doing media “tracking” when ads and promotions are sent to their cell phone, inviting them to come to the branch.

Instead of using electronic tokens, several financial institutions are migrating to mobile OTP (OTP – one time password). Mobile OTP consists of sending the password to the cell phone via any of the mass media: either via SMS text message, RCS, WhatsApp or Push notification.
Conclusions.
Debtor customers are becoming more mobile and digital every day and it is increasingly difficult to locate them via traditional means , so attempting a collection strategy exclusively via these means is expensive, slow and will leave out a group of debtor customers, inaccessible via traditional means (such as the 80% of people who stopped answering calls from unknown numbers