s no need for babysitters for brothers or sisters to the sick child. GPS or a simpler positioning service is used to easily find the patient address when visiting the sick children. Video enhances significantly remote check of the condition of the sick child. Case-book access supports the remote diagnosis/contact. Stockholm and Aland are the first application locations. Similar remote applications could be used for grown-up people and especially old people. See further Chapter 5, sections 5.2-5.5. 2.9 USER PERCEPTION Finding the optimum range of services for a target group is of course not enough. There are at least three areas where user perception comes in. These are pricing, quality of service End-User Needs and Demands and security. There is a kind of relationship between them. The user may for example be able to choose between lower priced, lower quality voice over IP and 'ordinary' telephony. She may also be able to choose between a number of operators/service providers offering a particular service with different quality of service and security at different price levels. This is of course one of the reasons for churn. Quality of service has been important since the beginning of telecommunication, when loudness was a parameter in networks with a heavy loss. The ear was the critical receiver. Today one can add the eye and the computer. See Chapter 7, which is devoted to the subject of quality of service. Security concerns basic human needs, primarily integrity and confidentiality, explained in detail in Chapter 6. The Internet has meant a revolution in communication, but also significant increased security risks. Pricing is dealt with in Chapter 5, section 5.11. 2.10 SUMMARY A number of user segmentations have been presented. Some matching between segments and services has been presented as an illustration of the methodology. A general feeling from the main author is that the user is the most complex element in the overall telecom context, and it is not easy to make this key element fit into the larger pictu