An EthoVision XT license can be:
Perpetual license
This is the most common license. You purchase a copy of EthoVision XT on a one-time basis and can use the software forever.
Time-limited license
This license is generally valid for a period of six or twelve months.
▪A time-limited license can only be activated online. See Activate your EthoVision XT license
Trial license
This is a temporary, free-of-charge license that you can use to evaluate the newest version of the software. See EthoVision XT trial version
▪A trial license can only be activated online. See Activate your EthoVision XT license
See also
▪Types of EthoVision XT license
▪Activate your EthoVision XT license