Fallin announced her decision late Friday after the use of the cards raised concern among civil libertarians and a number of bipartisan groups and lawmakers.
She says she wants to suspend use of the devices until a clear policy for using the new technology can be developed by the Department of Public Safety. She says taking the time will help educate the public and "calm the fears of the motoring public."
Law enforcement officials say the scanners are an important tool, but deployment of the devices comes at a time when civil asset forfeiture has come under criticism in Oklahoma.
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