Your state (like many other) essentially makes it illegal for anyone to have lockpicking tools unless they are a law enforcement officer, a licensed locksmith, licensed security or alarm specialist, or licensed private detective. The law makes it illegal to have tools like with intent to commit burglary, but lets the court (if you are charged) presume that you had an intent to commit burglary unless you belong to one of the types of persons described abovel. Essentially, your state assumes that there is no legitimate purpose for these tools for anyone except somone in the law enforcement, lock, security, alarm, etc. fields.Here's a link to the relevant statute: http://www.ilga.gov/legislation/ilcs/documents/072000050K19-2.htm