This is one of three short stories on how the QR is being used in society

The QR Edge: Cashless tips on tap

Cashless tips on tap

Quick, tip the bellman! He's right here, but you don't have cash — because you never carry cash.

Wyndham hotels wants to solve that increasingly common and embarrassing situation. It has become the first major chain to introduce digital tipping nationwide. Guests scan a QR code on a small plastic frame by the nightstand, usually with a photo of the employee. Some staff hand out cards with their QR codes. Tips go directly to the employee.

Housekeeping tips have dipped dramatically in recent years. One housekeeper told The Wall Street Journal that she gets just $20 a month in tips versus $100 in the past.