Earlier quoted context omitted.
The biggest problem with an ignition interlock device today is that they're extremely unreliable. As implemented they are also very intrusive. Granted, they are currently implemented only as part of a punitive measure, so that behavior is partly intentional, but it would be unacceptable for universal adoption. Probably be better to just make cars do realtime verification of license status before letting someone drive…
>The biggest problem with an ignition interlock device today is that they're extremely unreliable. As implemented they are also very intrusive Money spent making the device not suck reduces profit. Nobody will care when you abuse your customers because your customers are convicted criminals. Pretty much every company selling stuff that people need to use to not violate the terms of their sentence is like this.
If it's meant to be used by everyone (I'm not thinking DUI recidivists, how many people have you seen rationalize driving after a drink or two or six) then make it usable by everyone.