In a barbershop, the relationship between the barber and client is everything. A client who is unhappy with their fade might be too polite to say something in the chair, but will never return and might leave a 1-star review on Google or Squire. Place a QR code at the checkout or styling station.
The client scans and shares their feedback privately. If they aren't 100% happy, the Shop Owner gets an alert and can offer a complimentary fix or discount. This keeps your shop's average rating high and your chairs full.