As a male I cringe, but in this case the consequences are deserved. http://blog.wired.com/defense/2007/04/rapestoppers_ra.html
Ouch Consequences may be deserved in rape situation. But how about a woman just out to get a guy. With these devices "fore play" may be mandatory in the future. And yes I cringe just thinking about such devices!
Imagine a first date... things get hot and heavy and.................. "wait a sec while I remove this......." Deal killer right there.
next they'll come out with one with retractable teeth - in case you change your mind and decide to say "no" on that first hot and heavey date....