What is an iBUTTON ?

Steven Kosmerchock wrote:
>
> Friends,
> Has anybody ever tried to interface a PIC to one of these little guys? Has any
body out there tried developing software/hardware for iBUTTONS at all? I'm see m
any possibilities and would love to get a point of knowing how to design with th
ese. Any suggestions would be helpful.
>
>                         Best regards,
>                         Steven
>
> Steven Kosmerchock
> Email: steve.kosmerchock@celwave.com
> www.geocities.com/researchtriangle/lab/6584