(CNN) – When David Starr first opened his long-awaited stimulus payment from the U.S. Treasury Department, he said he almost threw it out without reading it. He said he did not know that for the last few weeks the government has been sending out over 4 million stimulus payments in the form of prepaid debit cards. The accompanying letter will inform you that the card is your Economic Impact Payment Card. Users can visit the EIP Card website to find in-network ATMs, where you can withdraw money without paying an out-of-network free. Visit the EIP Card website to find a nearby in-network ATM machine and check your card balance for free.