This is my idea: a mobile app that lets customers sign in and pick a specific barber or any. Then his/her name gets added to the list on the barber's phone to let the barber know who's next. This app would also have two important features. Customers could create appointments through the app (I currently have to awkwardly text my barber who sometimes doesn't write back). And I could have the user sign in with their phone number or their facebook name. Which would allow the barbershop owner to keep track of the 'churn rate' of specific customers. While giving him a way to contact customers regarding new specials or just reminding them to come get a cut.
Has anything been done in the tech sector for barbershops? Does this sound viable? I'll do customer development interviews if I think there's potential here.