1. At least one non-transitory, machine accessible storage medium having instructions stored thereon, wherein the instructions, when executed on a machine, cause the machine to perform a method comprising: establishing a connection between a first computing device and a wireless token device over a short-range wireless network; sending first authentication data from the wireless token device to the first computing device over the short-range wireless network, wherein the first authentication data is based at least in part on user identifier data; detecting a second computing device as collocated with the wireless token device, using the short-range wireless network; establishing a connection between the second computing device and the wireless token device over the short-range wireless network; and sending second authentication data stored in memory of the wireless token device from the wireless token device to the second computing device over the short-range wireless network, wherein the second authentication data is based at least in part on the user identifier data, the second computing device is authenticated for use by a particular user in a particular computing session based on the second authentication data, authenticating the second computing device permits the second computing device to participate in the particular computing session and causes association with the particular user within the particular computing session to transition from the first computing device to the second computing device, the first computing device is authenticated for use in the particular computing session based on the first authentication data, authenticating the first computing device permits the first computing device to participate in the particular computing session, and authentication of the first computing device to the particular computing session is terminated.