The Addalock is a take-away door that can be easily installed and removed in seconds on any door that surface inwards, giving you added safety, security and privacy behind it. it on the deceiver door of your home and take one with you when you travel. The Addalock can be when staying in a hotel, an AirBNB or any added piece of land term rental. for students away at college and for those like colleges and schools to use as an cheap option for their safety overcome downs.