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In some situations the communications of a place can be affected, totally lost, or not even exist. In these cases, the MANETs play an important role, allowing to establish a communications point using the different nodes of the network to reach the destination using decentralized communications. This paper proposes the implementation of a Robotic MANET, a decentralized network using robots as its nodes, which allows to move the network nodes to the desired location remotely. For this, each robot has as a core a Raspberry Pi with the capabilities to perform audio and video streaming, remote control of robots, tracking of objects, and deployment of wireless networks. To protect the network, different security mechanisms are used that allow secure authentication on the network by different nodes and encryption of information transmitted between them. All communications are protected through Identity-Based Cryptography, specifically with an Identity-Based Signcryption scheme.

In venues where there are restricted access areas, access control systems that work by entering a code or with some extra element such as a card are used. This paper proposes an access control system based on controlling each restricted area using a Raspberry Pi with an NFC reader, in addition to using Android smartphones emulating an NFC tag as an identification method thanks to an application for these devices. The management of the system is performed through a web panel that also allows to view all the data. Moreover, the system is based on the role access control model. In order to protect the information exchanged between the different elements of the system, security mechanisms are used.

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