Use of the app spread through word of mouth,[1] and was also encouraged by undercover agents;[11] drug trafficker Hakan Ayik was identified "as someone who was trusted and was going to be able to successfully distribute this platform", and without his knowledge was encouraged by undercover agents to use and sell the devices on the black market, further expanding its use.[11][12] After users of the devices requested smaller and newer phones, new devices were designed and sold.[4] The most commonly used languages on the app were Dutch, German and Swedish.[13]