Abstract: A personal locational and messenger device and system having a decentralized mesh network, a blockchain, and a device operatively associated with a non-transitory computer readable medium. The blockchain is implemented through application programming interfaces and software development kits. The blockchain is associated with the decentralized mesh network to define a personal location platform and a messenger platform. The decentralized mesh network has a plurality of nodes operatively associated to each other. The decentralized mesh network has a full mesh topology or a partial mesh topology. The device communicates through the decentralized mesh network. The blockchain stores a personal location and messages provided by users. The decentralized mesh network disseminates the personal location and the messages.