I didn't realize you could get Taptic Engines. I had wanted some about 10 years ago while I was working on a haptic data glove project, but Apple kept them under tight wraps because they own the patent and wanted them exclusive to their devices. I ended up using small pager motors, but I really think Taptic Engines would have made for a much better experience, both because they are smaller and because they are 3 axis linear vibrators, instead of a single axis rotary vibe.
I wanted to do something similar 3-5 years ago, and while I found that you could order the Taptic Engine, I couldn't find any good info for driving them last time I checked.
That said, it's installation method uses containers, which I could do without. Configuring it can feel a bit fiddly depending on the hardware you have, but that's likely to be the case with most NVR systems that support a wide variety of setups.