From Kendra Scalia's Electronic Visit Verification (EVV) Is Here:  What you need to know and how to get involved:

"Vendors, who have a desire to sell their most costly products and not create new EVV systems, have successfully spread misinformation about EVV requirements.  Some states, fiscal intermediaries and even consumers themselves falsely believe EVV looks like a few different system options, all with geolocation tracking or biometric data collection."