adding pager to factory alarm?

[drod]

I believe the factory alarm system is adequate and provides a decent amount of protection. the design however is missing a pager that could notify you once an alarm has been triggered.. you are pretty much left with relying on the vehicles' siren, and we all know people are so used to hearing them that they are often ignored..

I'm thinking about adding a pager system to supplement the factory alarm.

Has anyone done this?

I'm trying not to install a complete system that includes remote start, window rollups, motion, door lock, etc.. just to get the pager feature.

I know Stellar used to make a BMW plug-in kit but they were for much older models.. (1990-2000)

can't seem to find anything recent from them...

any ideas?