TAB Reader Single License permits software operation for one person on the computer with ArcGIS desktop installed. There is a discount for users purchasing two or more licenses simultaneously. Once purchased, you will receive a registration code. This registration code may not be distributed per the End-User License Agreement.
TAB Reader Academic License is actually the Single License with a discount and it is available for scientific and educational institutions. The request for the Academic License can be addressed to firstname.lastname@example.org.