If you are in the habit of taking photos with your smartphone and posting them online, you may be giving away your location. Embedded in those photos, not visible to the naked eye, are what are called geotags. Geotags identify the longitude and lattitude coordinates (and other detailed information) that can easily be uncovered with readily available software on the internet.
A geotagged photograph is a photograph which is associated with a geographical location by geotagging. Usually this is done by assigning at least alatitude and longitude to the image, and optionally altitude, compass bearing and other fields may also be included. – Wikipedia
How is this dangerous?
Your privacy is at risk… Each time you post a photo online from a GPS capable smartphone you are in essence giving away bread crumbs about yourself. For example, let’s say you take a pic of your kids, in your home, using one of these phones and you post it on Facebook. A Cyberstalker in essence can determine the exact location (within 15 feet) where you took the pic. In other words, the Cyberstalker would know where your kids are.
In most phones, where this is possible, Geotagging can be turned “off”. My advice, turn it off…
Other information on geotagging: