A discussion with demonstrations and photos of how a hotel Building Automation Systems (BAS) can be attacked using simple technologies available from eBay for under $100. This will cover the extraction of the programs that run things like the thermostats, door locks, and safes. There will be practical demonstrations and a discussion of several types of accommodation strategies in use today. Names may be changed to protect the guilty (and un-notified). IF you've ever wanted to know how a hotel's internal systems work, this talk is for you!