Sentry Technologies has been a leader in innovation for protecting our loved ones for a long time, and now they take another step way past what any of the other GPS personal location device companies on the market come even close to providing. The power of polygonal geofencing. Some companies provide radial geofencing, giving you the ability to draw large or small circles that usually encompass way more geographic area than you truly want to encircle. Now with the SentryGPS web portal you can draw geofences that cover your desired area much more precisely than ever before. Take the three examples below:

Local Neighborhood Geofence
The first geofence example I’ll present to you is that of a very tightly defined local area where a loved one may travel within his or her own neighborhood. For an adult with Alzheimer’s or other form of dementia, this may be their daily route to walk or ride their bike around the neighborhood. Or maybe it is a child’s route to school, and also encircling the block the school is located on. The sentryGPSid is the first GPS personal location device that can give you this precise of control of your geofence on any level, and the benefits on the local level are clear.

Geofencing for long distance travels
Another example for using polygonal geofencing is that of long distance traveling. The SentryGPS web portal allows you to create a geofence that will monitor your loved one’s GPS device whether they are traveling on vacation, work, or going back to college. Whether they are traveling one hour, four hours or 14 hours, the SentryGPS web portal gives you the ability to highlight their actual travel path so you can know right away if they take a detour from their normal course. Looking at the example to the right, imagine how large of an area would be covered by a radial geofence. Over 95% of the area covered by a radial geofence encompassing both end points would be outside of the true travel path.

Geofences for traveling into town.
Maybe the first two examples don’t pertain exactly to your every day needs for a GPS location device. Maybe you need a way to track your loved one on their daily commute while traveling from their home to either work, or school, or just into town. Maybe your loved one lives in a long term care facility, yet travels into town for work every day. The example to your left shows you how you can highlight that daily travel path on a local level, and encompass larger areas on both ends.