Sr. Pago (Señor Pago), one of the two largest mobile point of sale services in Mexico, today announced the closing of a seed round of $1 million in funding that includes Silicon Valley tech veterans Jay Adelson and Barrett Lyon, according to a press release. 

The company's latest round of funding comes after last month's launch of the Sr. Pago Card System, the first service in the Americas that combines a smartphone credit card reader with a debit card that can be reloaded with payments accepted through the card reader, according to the announcement. Provided in conjunction with MasterCard and Te Creemos, the Sr. Pago Card System is offered to individuals and small businesses in Mexico that have been underserved by existing banking services.

"As we're using technology to transform the informal cash-based financial ecosystem that comprises much of the economy of Mexico and other nations, we are pleased to have some of the top tech visionaries from the Silicon Valley onboard," Pablo González Vargas, CEO of Sr. Pago, said in a statement. "Jay and Barrett bring years of entrepreneurial experience building successful technology companies, and we look forward to their counsel as we expand operations and secure additional funding."

Jay Adelson is a serial entrepreneur, having built companies such as Equinix (Nasdaq: EQIX), Digg, Revision3 and SimpleGeo, according to the announcement. In early 2013, he founded Opsmatic, where he currently serves as chairman and founder.

Barrett Lyon is the founder of four companies, including Prolexic Technologies (acquired by Akamai for over $400 million), Defense.Net (acquired by f5 Networks), XDN, Inc. (acquired by Fortinet) and BitGravity, Inc. (acquired by Tata Communications). He is a pioneer in the fields of security and networking and will be advising Sr. Pago in these areas.