[meshr]

Why do you think so? Visa and MasterCard are banned in Crimea. Visa and MasterCard can't track its holder location.

[googamooga]

Banned or not, there are ATMs and POSes across whole Crimea, accepting Visa and MasterCard. There was a brief period in 2014 when the schemes withdrew from the peninsula, but they get back pretty soon in 2015.