From National Council on Independent Living (NCIL): Position Opposing Electronic Visit Verification:

"EVV systems often involve GPS tracking or telephone based systems for the healthcare workers to call into a system to verify their shift.  EVV is less effective than peer review systems that involve a common written timesheet which require sign-offs from multiple attendants and from the consumer to verify that an attendant has completed their shift.  EVVs rely on the mistaken belief that electronic systems are more reliable or less able to be tricked than other forms of verification when in fact phone numbers and other purely electronic systems are less secure than systems that require multiple sign-off.  In fact, in some states where EVV is required, consumer directed personal assistance (CDPA) services have been exempted because of the nature of CDPA services and the burden that EVV imposes on the disabled people who direct and receive CDPA services.  By including this as a Federal mandate, Congress would deny States the ability to make the decision on whether CDPA, or other services, should be excluded from the EVV requirement. "