sentences:  However, by 2002, the machines themselves were up to 15 years old, with their underlying technology being several years older, and they lacked the storage capacity for the increasing variety of fares and promotions available on the post-privatisation British railway system.AVANTIX Mobile machines were first adopted by TOCs owned at the time by National Express; however, they are now in use across all National Rail-controlled TOCs with the exception of Merseyrail who continued to issue paper tickets until TVMs had been installed at the last few stations on the Wirral line, which did not have any ticket issuing facilities.Arriva Trains Wales announced in January 2016 that their Avantix machines will be withdrawn after March 2016.