These are: dendrochronology (or 'tree-ring' dating), radiocarbon dating and thermoluminescence dating.
The concept behind apps like Mo ID gets much scarier when you start thinking about dating tech for wearable devices.
Upon encountering a new site, the archaeologist immediately requires information about its age in order to set it in context with other sites.
In research into our heritage the conservationist or architect may be able to date the general period of a building he is working with from either the situation, materials of construction, type of timber joints or other stylistic features.
Name Tag, a new real-time facial recognition app for Google Glass, is one such dating tech that uses Glass’s built-in camera to let you snap a picture of a stranger and identifies any online identities associated with that person’s face, like an online dating profile, a Twitter account, or even a coveted spot on a list of registered sex offenders. Google’s Glass official policy still forbids developers from building apps with facial recognition tech.) And we’ve already written about Playdope, which lets you meet strangers on the street through a GPS-enabled game.
Some tech advocates will say these apps have an overall positive effect on the future of dating — it’s good, they’d say, to be able to identify the faces we’re curious about within this big, anonymous world.