When security stops you at a store, typically they will ask to take your photograph and have you sign a written confession. You are not required to consent to either of these things, and you probably shouldn’t. If you refuse the store will call the police and you’ll either be arrested or issued a promise to appear. Depending on the value of the good you allegedly stole, you’ll be charged with either a misdemeanor or felony. Be polite with the officers, but do not say anything regarding the accusation against you. As soon as you are able, call lawyer. There are many defenses to a shoplifting case, but you’ll need a good lawyer on your side.