Version three is much better functionally according to the reviews, but has a more expensive subscription.
SPOT gen3 s can send a message via satellite to your emergency contacts or to the same rescue service.
We are all familiar with personal location beacons (PLBs) which can transmit a message, including location, to an overhead satellite, and from there to emergency rescue services. In the last few years, this technology has migrated to the smart phone, allowing bushwalk training to be fine tuned.īush walkers visiting remote areas often feel the need to take emergency devices with them to obtain help if an emergency occurs. Initially measuring HRV was only possible with expensive laboratory based equipment, but soon Polar had incorporated this ability into some of their top-of-the-line wrist computers. The next advance was the ability to measure heart rate variability (HRV) ( see previous post), using the powerful analysis capabilities of modern smartphones. Fitness training had become more scientific!
Some apps even use the smartphone camera and built-in light to measure blood flow pulses in a finger, without the need for an independent sensor. Modern smartphones have built-in compasses which can be calibrated and are accurate enough for the day walker, but not accurate enough for bearings over long distances. High resolution colour screens make viewing these maps and navigational features easy. Recently, apps which allow the viewing of calibrated digital maps have become commonly available, and some apps now incorporate the navigation features found in a dedicated GPS. Next, the GPS became available, allowing routes to be mapped live, waypoints determined and marked, and distances accurately determined. Today's smartphone has a high quality camera which can take video and stills, including panoramas, mark each with the location at which the photo was taken, and then upload it to the web using wifi or mobile (cellular) data.
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Probably the first device carried by bushwalkers to be incorporated into the iPhone was the still and movie camera. Over the last few years technology has made smartphones invaluable to bushwalkers, replacing many of the devices, which previously had to be bought and carried individually. As a bushwalker, can you afford not to own a smartphone? Which smartphone apps can replace dedicated equipment? What are the limitations?
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