each tap, the system calculates the fare for the ride, and it is deducted from the balance of the card. The card can also be linked to a credit or debit card and set on autoload, so that it automatically adds a certain amount of money as soon as the balance decreases past a certain level. Since August 11, 2022, contactless credit cards & their associated mobile wallets such as Apple and Google Pay have been accepted on GO Transit in which a passenger taps on and off with their credit card on a PRESTO card fare reader. Contactless credit cards can also be used to pay transit fares - by tapping on PRESTO fare readers - across numerous local transit agencies in 905 regions such as YRT and are eligible for the free transfer on those supporting transit services providers which is included in the cost of the GO Transit fare (where accepted). GO Trains use a "proof-of-payment" policy where the fare system is run on an "honour system". Passengers are required to carry a valid GO paper ticket or pass, digital mobile ticket or pass, a validated credit card or mobile wallet or Presto card to prove that they paid for their fares. Passengers may be subject to random fare inspections at any time during travel. This system is designed to reduce costs and improve efficiency. Enforcement of this system is carried out via Metrolinx's By-law No. 2 that, by reference to the Provincial Offences Act, imposes a fine for fare evasion. Although children ages 0 to 12 years of age can ride fare-free on GO Transit, but they may be required to show valid ID such as a Birth Certificate, Student ID, etc. Logo The GO Transit logo has remained largely unchanged since the agency was founded. The design was created by Gagnon/Valkus, a Montreal-based design firm that was also responsible for the corporate identities of Canadian National and Hydro-Québec. The firm's team wanted to create a unified logo using the initials of the Government of Ontario ("GO"), via two circles with a T incorporated into it. Lead designer Frank Fox described the creation of the logo as "a happy accident. More or less, we had this feeling among us that this couldn't be true. We went off trying many other solutions, but nothing else was good enough." The logo has since become woven into the cityscape