By Nathan Jeffay, August 12, 2010
Inventors have come up with a Bluetooth device for the Israeli Defence Forces, which can make any soldier's mobile phone permissible for use on Shabbat.
Where lives are at risk, such as in the army and in hospitals, special Sabbath innovations are permitted that are not allowed in other contexts.
The new phone device will eliminate the main transgressions associated with telephoning on Shabbat, making it permissible in the army and in hospitals. But the inventors stress that it does not make telephoning for normal social or business purposes acceptable.