From the Lifehacker article titled Entrustet Secures your Accounts After Death with Legal Backing:
Entrustet offers a free account that lets you set up unlimited password-protected accounts to be transferred over to a trust person upon your passing. How does it know when you’re gone? You assign a trusted person to be your Digital Executor, who will notify Entrustet and then provide a death certificate scan to activate the password conveyance upon your death. You can also assign your estate attorney to execute your Entrustet transfer upon your death, and the site offers up a few attorneys officially on board with Entrustetâ€”though we imagine any savvy attorney can be conscripted for the duty. Additional security and ease-of-use features (for the executor and recipients, at least) are included with paid plans.
You can check out the Fox Business Live interview below: