PITTSBURGH (AP) — PNC Bank says it's upgrading 9,000 ATMs to improve transaction security. The bank says the ATMs will be able to read chip cards. Each chip card transaction will have a unique code that can't be reused. Card information taken from the machine essentially becomes useless. ATMs will also be able to email receipts. MasterCard plans to begin transferring card fraud liability for ATM owners beginning on Oct. 1. Visa is expected to do the same beginning in the fall of 2017. The upgrades are expected to be completed by Oct. 1. PNC officials say the upgrades are a step in preventing fraud. They say many ATMs owned by third parties could be closed though to the cost of upgrading the machines.