Or it was a voice recorder plugged into a USB port on the back of the TV for power.
Looking at the photo of the device, it looks like an XIAO ESP32-S3 Sense with the camera removed but the camera board still installed along with its microphone. The wifi/Bluetooth antenna is installed but it also supports microSD cards.
If I was building this, I'd just set it up so I'd never have to recover it. Have the wifi AP come on for a few minutes at various times during business hours under a MAC and SSID that resembles a smartphone hotspot. Vary the time based on the current day of month week to produce pseudorandomness. Walk by that conference room at some of those times, but not every time, and use a burner to connect and download the latest recordings. Once a recording has been transfered, it's deleted and overwritten to prevent someone from establishing a timeline. If recordings sit for more than a few days, they are wiped. If you can encrypt the SD card, keep the key in RAM so there's nothing useful to recover if someone pulls it out.
You'd never have to recover the device because all data is transfered covertly. Even if security finds it, they'll likely inadvertently wipe it when it's removed.
alt Hacker News
Or it was a voice recorder plugged into a USB port on the back of the TV for power.
Looking at the photo of the device, it looks like an XIAO ESP32-S3 Sense with the camera removed but the camera board still installed along with its microphone. The wifi/Bluetooth antenna is installed but it also supports microSD cards.
If I was building this, I'd just set it up so I'd never have to recover it. Have the wifi AP come on for a few minutes at various times during business hours under a MAC and SSID that resembles a smartphone hotspot. Vary the time based on the current day of month week to produce pseudorandomness. Walk by that conference room at some of those times, but not every time, and use a burner to connect and download the latest recordings. Once a recording has been transfered, it's deleted and overwritten to prevent someone from establishing a timeline. If recordings sit for more than a few days, they are wiped. If you can encrypt the SD card, keep the key in RAM so there's nothing useful to recover if someone pulls it out.
You'd never have to recover the device because all data is transfered covertly. Even if security finds it, they'll likely inadvertently wipe it when it's removed.