Similarity
🔢
Cool serial, bro
Own a calculator or accessory with a low (<100) ID part in the serial number
Quantity
✌️
Twice as many as most people!
Own at least 2 calculators... it's a start!
Localization
🇪🇺
Guten Tag!
Own a Europe-specific calculator (CE-T and Nspire CX II-T…)