Sex offener registration is a system in place in a number of jurisdictions designed to allow government authorities to keep track of the residence and activities of sex offenders, including those who have completed their criminal sentences. In some jurisdictions (especially in the United States), information in the registry is made available to the general public via a website or other means. In many jurisdictions registered sex offenders are subject to additional restrictions, including housing. Those on parole or probation may be subject to restrictions that don't apply to other parolees or probationers. Sometimes these include (or have been proposed to include) restrictions on being in the presence of minors, living in proximity to a school or day care center, or owning toys or other items of interest to minors.