I need a specific type of scanner app prototype / proof of concept first. Budget $30-50

Budget is 50$ max. To be paid 3 days after a proof of concept video is delivered. No milestones. Needed within 3-4 hours. Details and useful links will be provided to chossen skilled people. Experience is not necessary, but appreciated. Skills are. Product can be on any platform, Android or iOS, depending on your proficiency and comfort. Budget is fixed. Don't waste time if budget doesn't suit you. As useful research material is provided, only quick implement is needed. I can't do it cozy laptop is broken. Start your bid with a line from your favourite poem. Or the name of your favourite Avenger. Other bids won't be considered. Looking forward to productive discussion.