A grocery service that monitors your pantry with an app that scans bar codes or let's you check off ingredients when you use them. Alerts you when things will expire or when you're going to run out. Could also be melded with a grocery service that prepares your basket for you with your staples before you come in. This breaks the "put the milk at the back of the store so you have to browse everything else first" model, but it could easily introduce a much more friendly "here's what you usually get and here's what we think you might like" concept. And of course you can have the pick up station at the back of the store too.
Electronic voting. Yea, even internet voting. Really shouldn't be impossible. Tom Scott says this is a terrible idea, but I don't think it's so unsolvable. The ways to cheat are: - stuffing the ballot box with bogus votes - counting or recording the votes bogusly - voting more than once or voting for someone else Voter confidentiality must be preserved. Here's my solution. - every voter must authenticate with some non-government system that 1) ensures user ID uniqueness 2) contains a method for contacting the voter (can be a form obscuring contact details) 3) creates a random code which is not retained by the system. This is easily done by Google, Facebook, or any tiny NGO. They would need to register and be subject to audit. - when a user votes, the data is logged in two public registers. 1) a voters register showing the person's user ID (or a unique variant from the authenticator) 2) a vote register showing the random code and how they voted
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