TESA Hotel is an app that allows you to open TESA wireless electronic locks (wall readers and electronic cylinders) using only your smartphone. It is accessed both at the rooms door and at the common doors of the facility to which the guest has access. The smartphone becomes the guest's credential. The credential in the app can be canceled or modified (activation / expiration data, access permissions) remotely at real time. TESA Hotel eases the encoding of the credential on the guest's smartphone by the hotel reception, allowing it to be done remotely and without the presence of the guest at the reception.