A:AnswerYes, as a failsafe it does. The keyhole is not readily identifiable & a recording would be initiated (if configured at set up) if an individual were that close to the device.
A:AnswerI'm not sure in re your question about the SD card. However, yes, you can have more than 1 Eufy Lock at your house. You will need to ensure that when setting up your locks that you name each separate lock uniquely so they can easily be identified.