> Have you thought of that,
> when using handheld remotes (for e.g. a TV set), and the
> betteries are beginning to run low, most people begin to
> press *harder* on the keys to get a connection...

Some remote-like devices are (were?) actually powered through the keypad.
V+ would get wired on one side of the switches, with the other connected
to controller inputs AND sorta "wired-or" to the circuits power.  That
way the device only uses power when you push a button...

BillW

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