I thought that alcohol monitoring/ detection ankle thing Lindsay has been sporting was complete BS. I bet she bought that at Toys R Us or Radio Shack. I'm sure it's battery operated and she conveniently left the batteries out. That's my theory. I'm no detective though.
I just read this which I found very interesting. That device, which apparently is called SCRAM, should be in direct contact with the skin in order to work. Lindsay was seen partying in Malibu with a stocking underneath the device. Ah ha ha ha. Gotta hand it to her. I guess where's there's a will there's a way.