FYI the xB2 comes standard with "basic" security. I asked my dealer rep about it before purchasing and this was his reply:
"There is a basic alarm sometimes referred to as "panic mode". It will cause the horn to beep and the lights to flash if someone attempts to forcibly open the door or start the car once the car has been locked using the key or remote feature.
The security feature has the panic mode in addition to several other features: starter disable, alarm memory, glass breakage and more."
Just thought I should post this in case anyone is thinking of paying for Scion Security because they were under the impression that the stock vehicle has no protection. For my purposes and situation, the basic security is enough.