Security First Network Bank announced this month that it is offering 6% interest-bearing parent-child joint checking accounts.

With a minimum deposit of $100, account holders can also get a $30 credit toward, a Web site that lets children run up shopping tabs with a ceiling set by their parents. Those who open accounts are in turn referred to Security First.

The offer is limited to the first 50,000 takers. After April 15, the accounts will revert to a competitive rate.

Security First has been offering 6% checking accounts to adult customers since April, a program that has met with "extraordinary" success, said Christopher Salomon, head of business development at Security First. "If we get them started with us at a younger age, they'll never leave," he said.

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