Thomson Reuters The Winklevoss twins are teaming up with Nasdaq, the exchange operator, to catch crypto criminals on its exchange. Gemini will use Nasdaq's SMARTS surveillance technology to monitor the exchange venue. Gemini, the cryptocurrency exchange founded by the Winklevoss twins, is going to use Nasdaq's surveillance technology to sniff out nefarious activity on its trading venue. The cryptocurrency exchange announced the deal with Nasdaq on Wednesday.