Granting an access, then taking it back
For a flat let at Le Puisoz or in one of the Grand Parilly residences, the point is easily put: a code is revoked in seconds, whereas a lost key means changing the cylinder. An inventory, a tradesman's visit, keys handed over on a Sunday evening — access is granted remotely and withdrawn the same way. The keyring stops circulating between tenancies.
For a unit on the industrial fringe, the timestamped log has concrete value: knowing who opened the service door, and at what time, beats a keyring passing between several pairs of hands. Deliveries and outside contractors are then handled with temporary access rather than with cut keys.
The limits are worth stating. Batteries run down, and faster on a door opening onto an unheated stairwell, of which the plateau still has plenty. A flat phone opens nothing. And a door that closes badly will not close better for being motorised: the mechanical side is put right before any electronics go on. Always keep a way in that needs no power on those montée doors.
Do not confuse building access with your own door
This is the commonest confusion on the phone, above all in the rebuilt stairwells at Vénissy and la Darnaise, fitted with a new entry system at the foot of the block. That badge belongs to the landlord or the managing agent and is not yours to replace. Your flat door is a separate subject, with its own cylinder.
In a rented flat, in a la Darnaise tower as much as in a new Puisoz studio, only the reversible option holds up: a motor unit fixed on the inside face over the existing cylinder, removed without trace when you leave. The key still opens from the landing. A keypad on the outer face changes what the landing sees, and that brings in the owner, and sometimes the co-ownership. Keep the original cylinder for the check-out.
Technically it all turns on the survey: whether the cylinder is clutched, how much length is free on the inside, what room is left on a shrouded multipoint, the thickness of an already reinforced leaf. In the plateau towers, the concrete shear walls also weaken the link between the lock and the bridge placed inside the flat. It goes as close to the door as possible, never two rooms away.
How does this service work?
Techniques, typical situations, standards and things to watch out for: it is all on our smart lock page. This page focuses on what the service involves in Vénissieux.