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Computer viruses could be about to take a giant leap and start spreading via smart barcodes, warn experts.

Security researchers have infected a Radio Frequency ID tag with a computer virus to show how the technology is vulnerable to malicious hackers.

The researchers warn that RFID tags could help mount many different types of attacks on computer systems.

Makers of radio tag systems were urged by the group to introduce safeguards to guard against RFID-borne bugs.