BT is installing "RABITs" in a bid to cut the number of cable thefts, a problem it says costs the company and its customers millions of pounds each year.

The Rapid Assessment BT Incident Tracker (RABIT) is a burglar alarm that the telecoms company said can act within minutes and alert security and police to the precise location of a cable theft.

The technology constantly monitors the BT network and detects when communication has been disconnected.

Tested in December, it will now be installed across the country, monitoring the company's UK telephone and broadband network.

BT Scotland director Brendan Dick said it "will make thieves think again. We are now able to inform the police of the exact location of malicious network attacks and it won't be long before they start catching the thieves in the act."