Digital payments

Assemble allows Mastercard partners or issuers to provide checking, budgeting and payment features, as well as additional money management.

The Federal Reserve Board's vice chair of supervision said that digital currencies hold the potential for innovation but that the financial system's security and resiliency are more important.

Cryptocurrencies will not gain widespread traction with corporations and governments as long as there remain crucial questions about their volatility, risk, volume and shadowy affiliations.

The explosion of interest in digital assets this year, and the multiplying of their market value, are making cryptocurrency debit cards newly attractive. Banks could partner with intermediaries or issue the cards directly, but obstacles remain before that day can arrive.

JPMorgan Chase is partnering with another fast-growing technology firm, this time to help business clients eradicate paper checks.