This site saves little bits of information in your browser to help make the site work better, and to enhance your user experience. As everyone knows, these little bits of information are called "cookies".
This site will probably work even if you do not allow cookies to be set in your browser, but it may not work as well, and in the future we may choose to block access to those devices that do not allow us to set these cookies.
In order for this site to function we need to know your location. You can decline to give your location, but then we can't tell you if there are any leg lamps nearby, and we can't record the location of any you have found. We record locations in a database, but they are not associated with any personally identifying information.
This site sets a cookie to remember your last known location, so that if you restart your browser the page you get will be based on that location. We did this because mobile browsers quickly forget web pages and then reload them, and we didn't want to ask you again for a location you already agreed to give. We also didn't want to save your last known location in a central database, so we saved it in your device instead of ours.
This site puts a cookie in your browser with an identification code which is unique to each device. We do this to make it easier to remove duplicates or to be able to block a particular device in case of abuse.
The unique identifier is specific to each device and cannot be used to identify the person using the device. The identifier is created by taking the IP address of your mobile device (which likely changes as you move around) and the date and time that you either search for nearby leg lamps or report a sighting, and then applies the MD5 hash function to create a unique 32 digit hexadecimal number. It is a mathematical property of a hash function that it cannot easily be run in reverse, so while this unique information from your device creates a unique ID, it cannot be run backwards to determine the input values.