Is it possible to determine by some device that a certain mobile application is installed on the phone?

Question

Programming

Good afternoon.
Is there any program or device to determine if a certain mobile application is on the phone. For example: a client enters a certain store (with a mobile application from this store installed) and the seller (or better, a remote administrator) receives a message that the id of this client has appeared in the visibility zone of this device.

Answer 1

GPS

Answer 2

wifi with local gateway for app.