Patent ID: 8200249

Claim:
A system for causing, enabling or disabling the use of controllable modules in courteous cellphones located in a zone, said courteous cellphones being conventional cellphones enhanced to receive and utilize control signals to implement this application's operations, said system comprising: (a) a nonempty set of control signal transmitters, each said transmitter transmitting a packet comprised of control signals and possibly operand data, said control signal and possible operand data not including data derived from cellphone user's personal data, said transmitters either located at an entrance to said zone, or else located throughout said zone and blanketing said zone with said control signals, all of which, whether at an entrance or located throughout the zone, are positioned so that for every pair of said control signal transmitters, said control signal transmitters do not usually interfere with each other's transmissions, (b) at least one controllable module ill said courteous cellphone, where control may be either enabling execution of, or restricting execution of, or causing, an operation in said module, in which said operation being caused, disabled or enabled may require the input of some data; said controllable module not being a power supply supplying power to RF transmitter and speaker; and (c) a receiver module within said courteous cellphone which, upon receiving said packet, sends control signals and possibly operate data from said packet's fields to selected said controllable modules; wherein said control signals, and possibly data value, operates on said module responsive to said packet field's data, or provides data for said operation, for a predetermined period of time after receipt of said control signal.