Violators of domestic violence protective orders are increasingly subjected to GPS monitoring in several States, as reported by the NY Times and by the Chronicle. Implementing such legislation in CA, as opposed to Illinois and Texas, is somewhat of a challenge. The Chron elaborates:
Without GPS, police have been lax to follow up on complaints that partners are ignoring protective orders, said Tara Shabazz, executive director of the California Partnership to End Domestic Violence.
However, Shabazz and her organization oppose California's proposed GPS legislation because it would require the state to order GPS tracking for an offender without providing details on how to implement it.