The devices would replace the ankle bracelets that are currently used to track offenders. The bracelets have been criticized as a lacking device as offenders have successfully removed them in the past before disappearing off of the radar.  “(The devices would) be a little more difficult to take off,” said Rep. Maralyn Chase, D-Edmonds.   Chase is among a handful of lawmakers are looking into radio chips that can be planted under the skin. Some of the designs are no larger than a grain of rice.   The radio chips would allow police to track an offender from a sex offender using the same technology used at the Tacoma Narrows bridge toll … If passed, the bill would allow the state to hire the Washington Association of Sheriffs and Police Chiefs to determine whether chip implants would be more effective.