The company is at the epicenter of the country's political turbulence.
A study looked at Brazil, Argentina, Chile, Colombia and Peru, which make up 85% of South America's GDP.
Uncertainty is damaging the prospects for economic recovery.
While more Mexicans have access to banking institutions in Mexico, lack of information and education on retirement accounts continues to be a significant problem.
BBVA and Santader are testing the transactions through San Francisco-based Ripple's distributed ledger technology, which enables permanent time-stamped records with integrated messaging.
Authorities have had to fly in about US$2bn/y in hard cash to meet demand, which has generated logistics costs for the state.