Irate conversationalists who want to hang up on someone soon can just throw out the phone. Disposable wireless phones are on the horizon. Several companies are producing them, which will be sold as prepaid phone cards with voice-activated handsets, 60 minutes of airtime and batteries. After using up airtime, callers can simply throw out part of the phone and head to the nearest 7-Eleven, Kmart or Target to buy more minutes.
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