Mündelsicher, safe enough for a ward. The word comes from the law on guardianship. In everyday German it means an investment that is completely safe.
Today a court-appointed carer who manages another person’s money should invest it in an interest-bearing account at a bank that belongs to an adequate deposit protection scheme. Shares, funds and bonds need the approval of the court or a court exemption.
In 2021 the state justice ministers discussed the rule. In years of low interest, they saw a conflict between the duty of safety and the goal of preserving the value of the money.