CO-OP Financial Services this week released its list of candidates for its THINK Prize 16 — a competition for entrepreneurs who want to revolutionize how credit unions and other financial institutions help aging consumers. Winnowed down from 137 entries, the 30 remaining ideas from around the country range from rewards apps to mobile branches, an ATM concierge service and more. CO-OP is conducting the contest in partnership with OpenIDEO and MasterCard.

"The emphasis in this challenge is on finding financial technology solutions for aging consumers that are both innovative and implementable," CO-OP Chief Marketing Officer Samantha Paxson said. "We have been impressed by all of the ideas that came out of our workshops and those submitted by our larger OpenIDEO community."  

A $10,000 prize goes to the five best ideas, which will be announced on Feb. 1. Here's a look at the 30 ideas.