# Development of an Electronic Smart Safe Box Using Private Blockchain Technology
## 1 Introduction  
The need to secure valuable things in a safe and secure traditional safe box at home with the use of different family members might lead to missing important items and documents. For example, a family member who keeps sensitive documents in the safe box and tries to find them may sometimes have difficulty remembering where they are and who took them or the last time the box was used. It refers to the nature of the human being, prone to forgetfulness, who might not remember who added or removed items from the safe box or when they were removed. However, with the traditional safe box approaches of using a key or keypad to safeguard valuable things, security is not guaranteed because the keypad password method can be easily seen by others using shoulder surfing attacks and that makes this security method useless. A smart safe is an integrated lock that would offer maximum efficiency in securing important materials from getting into unauthorized hands. In order to protect a safe box from various security attacks, a number of authentication mechanisms such as face recognition, fingerprint, and keypad password could be used. However, a smart safe used by a number of family members further requires a blockchain solution for securing and blocking unauthorized access. A smart security box would work seamlessly with the blockchain as it provides secured data that only the owner can access [1]. A smart security box would work withblockchain allowing the placing of data in an open network securely. Additionally, it is secure and trusted as they are stored linearly following the chronology, making it difficult to go back and alter the contents of a block. Blockchain is by nature decentralized; it has a high level of transparency. Furthermore, this research work increases the traceability of data shared across a business network and saves costs with new efficiencies. A smart security box is a hardware wallet that gives additional security to information and funds. Furthermore, blockchain would offer immutability, allowing the saving of recorded data in the safe box without it being vulnerable to changes. Individual authentication might fail. However, if the stated access options fail, the further security modules of the smart safe box are activated [2]. In that case, this smart safe box would have the installed security strategies described below:  
* Motion detector and camera recorder: The camera is activated to detect recorded data when someone moves in front of the box. * GPS tracker and alarm: If anyone attempts to take the box by force, the administrator can trace them with the GPS tracker. * Optical detector: Used to detect things in the security box and collect them in a log file to find missing items. * Private blockchain: Used to secure all private block transactions logged so that no one can modify them. Conclusively, this research employs the knowledge of security boxes to keep logs safe by following the blockchain WORM ledger with limited permission for users to read. In the WORM ledger once the information on any transaction is written, it cannot be modified. This write protection assures the data cannot be tampered with and thus the integrity of the data cannot be compromised by any subject using the safe box. Additionally, tracing and tracking of the security box are enhanced since the security box would generate and send a Uniform Resource Locator (URL) with a GPS location and secure logs with blockchain if the box is stolen. Further, the use of blockchain technology is used to enhance the security of smart security boxes with the use of the Internet of Things (IoT) to detect local items and improve the detection to understand the locally stored things of value in different places. This paper has main contributions as listed below:  
* To the best of our knowledge, we are the first to consider using a private blockchain solution in a smart safe box to enhance security and tracing things.