Anybody knows anywhere I can get an automatic check in and check out system?

Yes, very much so. Not sure if self-promotion is allowed here, but our company has what you're after.

We specialise in hotel automation. In short, this is how our concept works: Guest books. On day of arrival the guest gets SMS/email with an access code. This code can be used on the entrance door and the room door. When check out time comes, the code is rendered useless, and a new code is generated to the next guest after the room has been marked as cleaned.

If it's a reception free hotel you are looking for you can check out our website for more information: www.getshop.com