Addalock - (1 Piece ) Portable Door Lock, Travel Lock, AirBNB Lock, School Lockdown Lock The Addaock is a portable door lock that installs in seconds without any tools required. The Addalock gives you additional safety, security and privacy. Use it at home or take it with you when you travel, apartment living, hotel students, school lock down The Addalock is great if you are staying at an AirBNB or any other short term rental See installation video under " See more product details"