You would not want a retail store to possess your biometric data, nor would you want it to be transmitted in an insecure way for verification. My team developed a transportable data storage device with one ID component being a fingerprint read. The comparative print was stored in an encrypted vault on the device that could not be penetrated. I have seen devices that compared fingerprint data, but if there was a match, it only outputs a "1". You can imagine it was child play to spoof.

Generally this would be hard to utilize as you will lack the legal interest and reasoning to introduce collection and processing of biometrics in a retail setting, as there are many less intrusive alternatives for an efficient identification of staff and the costumers without collecting their biometrical information, that is considered to be quite sensitive.