It is probable that tourists nodes may be unwilling to share their phone memories with other nodes due to the lack of battery power or memory size, e.g., in PF mode they are storing their messages into well situated information storage hubs and in LF mode they depend upon local users’ mobility patterns to deliver their messages.
Our results indicate that the best possible solution is for a tourist to share their messages with any available local node while they are both moving within the network.
Designing a protocol that can provide appropriate incentives is therefore needed [2].