Canny hoteliers are using Taiwanese technology to block cellphone signals, fooling guests into thinking there is no coverage in the area and forcing them to use the hotel's phone services. Some hotels in Scotland have installed mobile phone jammers to force guests to use the in-room phone service, reported Scottish tabloid Daily Record.

Yahoo;
The device emits a radio signal that blocks the use of mobile phones. Users who are unaware that their mobile phones have been sabotaged think there is no coverage in the area when the phones show 'no service'.

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