Storage locker software

The project: Creating the software for a storage locker. The software allows users to choose a storage box, set a PIN and store their valuables in it. Afterwards, they can open the box by re-entering their PIN. ---Required skills--- * Strong UX / frontend-skills * Java (or another Android-compatible programming language) * Controlling an electronic lock (serial port instruction) * Password/PIN-code management ---Functionality--- The software will be operated by a touch-screen. It will: *Let user pick an unoccupied storage box *Let the user assign a PIN-code to his box *Open the lock to give the user access *Lock it again when the user closes the door *Unlock it when user returns and enters his locker number and PIN *Delete the PIN and prepare the lock/box for the next user See attached mock-ups to get a better understanding of the planned software. The software will run on a touchscreen-operated Android system integrated in a kiosk. The touchscreen is connected to a motherboard inside the kiosk, which is again connected to the control board for the electronic locks. The software should be running on the machine at all times. It may be launched from desktop, but users should not be able to mess around with the OS outside the software (how this is best handled we’d appreciate some input on). It is important that the interface has good UX and design: New users should be able to operate it without any training. Safety is also an important aspect - no one should be able to open the locks without the correct PIN. ---Success criteria--- *Users can quickly and easily open and close their boxes without assistance *There are no security incidents where boxes are accessed by others *The design is appealing and modern Maintenance: There is no planned updates or maintenance - but it will probably be necessary, for some reason or another. We would like to stay in touch with the developer to offer ad hoc work regarding maintenance/updates. Project timeline and deadline: Project start-up is ASAP. Work should be concluded within a handful of weeks after project start (depending on scope). ---Progress plan and budget--- *Developer offers a price quote, with suggested milestones and estimated timeline *Both parties agree on a budget. Work on software begins *Milestone deliveries *Final delivery (with all components) *Polish/minor iteration Kiosk hardware specs: A20 motherboard CPU A83T (Octa-core Cortex-A7 @ 1.6GHz) RAM 2 GB 8 GB internal SSD Android 4.4.2 operating system Full root access is given 12.1 inch touch-screen Resolution: 1920x1080 Brightness: 250 nits Contrast: 450:1 Response time: 5ms Dot pitch: 0.297 Screen type: Capacitive touch screen Touch points: 10 8 locks 1 control board E-lock uses serial port instruction