BEND, OR -- State legislators are considering limits on the storage of data collected by digital license plate readers used by some police agencies. New technology in use by some law enforcement agencies allows police to quickly navigate license plate data in the search for stolen cars and criminals.  But, the use of license plate readers and the storage of data they gather has some lawmakers scrambling to create statewide guidelines.  Bend Senator Tim Knopp (R) says that for him, it’s a civil liberties issue.  "I think as we get further down the road with technology, we want to make sure our laws are explicit in what law enforcement can do with the different data they are able to collect. Because, just because we can, doesn’t necessarily mean we should."