Hi, I have a client who has an Entrotech door entry system, ground floor flat block of 8. My client is disabled, getting around is difficult for him. Does anyone know if something can be retro fitted to the handset so he can at a minimum open the door. As he's ground floor and at home all the time, he's the one who gets buzzed for entry he also gets a lot of deliveries of his own for work. None of the residents are keen on a service button. Any advice or ideas would be appreciated. Im keen to help this guy out.