It's an interesting concept, but I don't get the need to have a physical device. You're catering to people who are looking to distance themselves from the real

It's an interesting concept, but I don't get the need to have a physical device. You're catering to people who are looking to distance themselves from the reality of bodily function by finding them what you describe as the 'cleanest restooms' (bit of a misspell in the copy, by the way) but also expect them to carry a non-discrete keyfob everywhere they go, that through your label and it's purpose they will associate only with excrement. I'm just an armchair social psychologist but I feel like your branding should be far more discrete. The branding should be associated with cleanliness, not a euphemism for toilet, which conjures unclean mental imagery. Use NFC on a phone, or RFID on a card that can be placed in the wallet and a name like (here's my best marketing consultant impression) 'Pristn' to give a more positive image when your name is read. You will not disrupt people's shame in their bodies, unfortunately.