>"Robert11"
> Was wondering how effective the "micro-chip key"

The key interrupts the computer and starter solenoid. You can bypass this.

>How is it done?

Sorry, it's a trade secret. My ex-buddy got locked up for 6 month for owning
a ghost (filed) key. If you're in California, don't carry a worn out key or
risk jail time.

> What might be better, other than the electrical alarm systems?

Pair of shotgun & Raiders' fan sticker.