From Jones Day:

The EFTA requires ATM operators to provide notice of any fees charged to consumers.  An ATM operator that imposes a fee on the consumer must, at the time the service is provided, tell the consumer that a fee is imposed and the amount of the fee.  15 U.S.C. § 1693b(3)(A).  EFTA also requires ATM operators to provide the fee notice on both the machine and the ATM screen.  15 U.S.C. § 1693b(3)(B).  The requirements for the content of the notice differ for the two locations.  The “on the machine” notice must “be posted in a prominent and conspicuous location on or at the automated teller machine…” and must state that a fee is charged for use of the ATM.  15 U.S.C. § 1693(3)(B)(i).  The “on the screen” notice must notify the consumer that a fee is imposed and state the amount of the fee.  15 U.S.C. § 1693(3)(B)(ii).  In addition, the “on the screen” notice must be given after the transaction is initiated but “before the consumer is irrevocably committed to completing the transaction….”  Id.

Read more: Read more: http://www.jonesday.com/pubs/pubs_detail.aspx?pubID=S6518#_ftnref1