You are visiting a lovely or interesting street or a hidden corner and would like some inspiration.
An app that shows you pictures others have taken at your current spot (and close surroundings.)
Even though email is an asynchronous system by its nature, it might be useful to have a context of the urgency of reply. Something that is more precise than “low/normal/high priority.”
Use one digit number from 0 to 9 to specify the number of days until you would like to receive a reply. Start your subject line with this figure. Zero for today, one for tomorrow, etc.
You are in a foreign city and need some help.
An app that – based on your location – shows the last few questions and answers that might be helpful to you. At the same time, you can also press a button, and it’ll connect you to someone that can help you with your question or problem. If what you asked, and he helped you with might be interesting to others, it will also be published (anonymously) to help others.
Help you with facts and conversation techniques during social interactions.
An app and a hidden earplug that’s a microphone and a speaker. The app analyzes your conversation – what you and others say – and gives you live advice on the subjects that come up, and on your conversations style (according to the settings you choose.)
A convenience for travelers and income for the public transport company.
Place small vending machines at public transportation vehicles. Payment with smartphones or contactless credit cards.