The concept is also known as password chaos or more broadly as identity chaos. The increasing prominence of information technology and the Internet in employment, finance, recreation and other aspects of people's lives, and the ensuing introduction of secure transaction technology, has led to people accumulating a proliferation of accounts and passwords. According to a 2002 survey of British online-security consultant NTA Monitor, the typical intensive computer user has 21 accounts that require a password. Some factors causing password fatigue are:  Aside from contributing to stress, password fatigue may encourage people to adopt habits that reduce the security of their protected information. For example, an account holder might use the same password for several different accounts, deliberately choose easy-to-remember passwords that are too vulnerable to cracking, or rely on written records of their passwords. Many sites, in an attempt to prevent users from choosing easy-to-guess passwords, add restrictions on password length or composition which contribute to password fatigue. In many cases, the restrictions placed on passwords actually serve to decrease the security of the account (either by preventing good passwords or by making the password so complex the user ends up storing it insecurely, such as on a post-it note). Some sites also block non-ASCII or non-alphanumeric characters. Password fatigue will typically affect users, but can also affect technical departments who manage user accounts as they are constantly reinitializing passwords; this situation ends up lowering morale in both cases. In many cases users end up typing their passwords in cleartext in text files so as to not have to remember them, or even writing them down on post-it notes which they then stick in a desk drawer. Some companies are well organized in this respect and have implemented alternative authentication methods or adopted technologies so that a user's credentials are entered automatically, but others may not focus on ease of use or even worsen the situation by constantly implementing new applications with their own authentication system. HD 72108  HD 72108 (A Vel, A Velorum) is a star system in the constellation Vela. It is approximately 1640 light years from Earth. The primary component, HD 72108 A, is a blue-white B-type subgiant with an apparent magnitude of +5.33. It is a spectroscopic binary, whose components are separated by 0.176 arcseconds. At a distance of 4 arcseconds away is the third component, the magnitude +7.7 HD 72108 B. The fourth component, HD 72108 C has an apparent magnitude of +9.3, and is 19 arcseconds from the primary.