Barron magazine writes: Tontines are getting attention around the world as retirement savings vehicles, including in Japan, where some workers pay into a tontine-like annuity from their 50s until retirement, then begin receiving payouts to supplement their national pensions.

In the U.S., they could be offered as part of 401(k) or similar plans, or a group of private investors could set one up.

Read the full article from Barron's Weekly here: