Houston, Harris County, Texas criminal courts are using another device against repeat DWI offenders. A second time DWI offender is required to install a guardian interlock device while on bond awaiting the resolution of their case even if they are innocent of the new charges. The guardian interlock device is a mechanism similar to a breathlyzer which is installed in a vehicle's dashboard. Before the vehicle starts, the driver must breathe into the device.
A more advanced interlock device is now on the scene that takes a picture of the person blowing into the device. Thus, a record is made of whoever is blowing into the machine. The maker claims to be fool proof, but I doubt that since we have seen so many false positives with the regular interlock device over the years. More importantly, are other drivers allowed to use the vehicle without a picture being on file?