An ambient sensing tool to help people when they report crisis or personal needs.

We live in dense urban landscapes that have crisis at many different scales. A crisis may be a large event such as a tsunami, an earthquake, a terrorist attack or other large scale disaster. A crisis may be something smaller such as a house fire, or a pileup on the freeway, a gas leak or a road out. A crisis may be something relatively minor, a crisis only to one person, such as being locked out of ones car, or trying to find a lost pet, or needing help sharing babysitting duties.

Citybot is a twitter service where you tell it what you want or have and it matches you against other people with complementary interests. The project riffs on the idea of a real time craigslist or a real time ebay; and is focused on local communities and on being lightweight and fast. You use #hashtags to indicate things that you want or have and you can supply your location too.

• Homepage: http://angel.makerlab.org