Hi people, please excuse me if this is the wrong forum to ask, I am new. I want to build a cheap DIY trip wire that records how many times it is set off. If I could use some sort of laser to be more discrete that would be a bonus (and just cooler). Also if it is possible to record the time that someone triggers it that would be awesome. The reason for this is I have a feeling my landlord comes into my house while I am away and I want to know for sure if she is because thats totally NOT in my contract. It would be best if it records the time so I could bust her sneaky @$$. I feel like a laser trip across the doorway, or some kind of simple circuit that registers when the door opens / closes would be best because a simple trip wire could slip out and fail by accident (not from her) where as the others would kinda show an entrance / exit pattern so I would know it was more likely a person. My last suggestion is that possibly I could attach an obnoxiously loud alarm to the system so the people who live upstairs would hear her and she would be totally busted with witnesses. But it has to still count ( and hopefully record time) and she can't be able to tamper with the counter. haha, anyways. I would love to hear suggestion or be directed to some kind of tutorial on this matter!