I have seen that on LinkedIn this morning and, yes, Accor is late on this, but sincerely...I have never been a big fan of it when I used it a few times in Hilton hotels. You need data plan with your phone (not always the case when traveling abroad) or connect immediately to the wifi when you are still at the front desk. Then you need to retrieve the key in the lift, at your door, etc. Frankly...having the key card in your hand/in your pocket is just more convenient IMHO.