Especially suited for use in schools, TEMP-badges from TEMTEC,
Inc., of Suffern, New York, change color after one day's use,
ensuring that visitors, substitutes, and contractors must sign in each
day. The badge is activated by applying a clear, smiling face sticker
that turns orange within 24 hours, making it obvious that the badge is
expired. The badge can be combined with the One-Write Sign-In System,
which allows a visitor to sign in on a carbonized log sheet that
transfers the visitor's name onto the pass.