I mentioned the Android app "CCW", it allows you to enter your permits including non resident and shows the states that honor your permits in green and the ones that do not are clearly marked in red. It also lists all the state specific information you need to know to carry in any particular state. Where CCW is prohibited, must inform or not, etc. A very nice app to quickly look at a specific state to keep you out of trouble, or at least let you know when and where you are in jeopardy if you are determined to carry anyway.