I have to wonder who will bother carrying an NFC keycard with them everywhere they travel, on the off chance they happen upon a piano with a "compatible" bench? Especially when the seat already can be adjusted manually, has in-chair storage/memory, and also has bluetooth functionality with smartphone app support? Who loves hotel keycards that much?
I will say however, an electronically-controlled height adjustment with a smooth, friction-free "steer-by-wire" knob is a pretty sweet idea....something for the pianist who has everything!