Open a security gate with your cellphone
Scenario: A Town House complex would like to open the entrance gate using the owners/tenants cellphones. Solution : Asterisk is set to look at the caller ID and only open the gate when it comes from a known user. The call does not cost the caller anything , because Asterisk does not answer the call. The additional advantages is that the call log is available to see who opened the gate and at what time. It could further be used to track to see who is inside or not. The hardware to "trigger" the gate costs under R200! It also becomes easy to add a new member - let's say someone comes to visit. A new member can be added for a limited period. The end of the gate remote control is finally in sight !