eSky 4G wired device can be connected with breathalyzer via analog input (A/D) to report whether the driver is driving under the influence (DUI). Combined with an output to disable engine starter and a UART to connect to a camera will better serve the purpose of preventing driving with drinking alcohol.
Prevent driving under the influence (DUI)
Disable engine starter if the driver's alcohol test is positive
Make sure who is doing the alcohol test with camera monitoring