318 Personal Content Experience: Managing Digital Life in the Mobile Age Figure 7-7. Suunto t6 wristop computer and heart rate measuring belt (Photo: courtesy of Tero Hakala). usually considered computers, we have chosen the fi rst case. We still wish to stress the fact that even though these devices do contain embedded computing hardware, they are not considered to be com- puters by general public. Personal training is a representative application area that illustrates our point. Personal fi tness data (or content) is created with various fi tness devices, such as the Suunto t6 wristop computer (Figure 7-7). The device consists of two pieces, a wristwatch main unit, and a heart rate measuring belt that is worn around the chest. In addition to standard time and date functions and heart rate measurement, the device is also capable of measuring temperature and air pressure. Pressure can be used to estimate the altitude. With some extra accessories, such as a foot pad (an acceleration sensor that is attached to a shoelace and can measure the speed by analyzing the foot movement patterns), distance and speed can be calculated. The same can be achieved with a GPS receiver, such as in Suunto X9i. From a personal content point of view, we are especially interested in the heart rate measurement and travelled route with GPS-enabled devices (section 7.2). The main functionality in any device targeted at personal training is simple enough. The device connects wirelessly to the heart rate belt worn around the chest, and once the “Start timer” button is pushed, it starts recording the heart rate at defi ned intervals, effectively creating a log, until the “Stop timer” is pressed. Then, the device can typically show the average heart rate, the estimated calorie consumption, and minimum and maximum heart rates. Often, this information is also available in real-time while exercising. These are typical dedicated devices that focus on “G” actions.