1.   Airlines currently foot the bill for the security systems.

2.   Every time I went through an airport security system it was me they took apart.

3.   He bought a new security system to keep out intruders.

4.   I was amazed by the apparent ease with which she got through the security system.

5.   No security system can ever give complete protection against a determined thief.

6.   Our security system is simple to install.

7.   The away mode, as it adjusts the lights and temperature, also activates the security system.

8.   The companies plan to apply the concept to gas and electricity supplies as well as security systems.

9.   The first stage would be to install security systems and adequate lighting in churches.