WLAN-Opp: Ad-hoc-less opportunistic networking on smartphones

Opportunistic networking enables many appealing applications including local social-networking, communication in emergency situations, and circumventing censorship. The increasing penetration of smartphones should, in theory, foster opportunistic networking. In practice, current candidate technologies for opportunistic networking, such as Wi-Fi ad-hoc, Bluetooth, and Wi-Fi Direct, are either not available on current smartphones, or require undesired user interaction to establish connectivity.