In this respect they're not really any different from an officer administering a field sobriety test or a breathalyzer to someone they've stopped for a suspecte

In this respect they're not really any different from an officer administering a field sobriety test or a breathalyzer to someone they've stopped for a suspected DUI: these prime the suspect to give more information than legally required. And worse, these will provide opportunities for the state to build probable cause for a stop that otherwise might not exist.