You die on a Tuesday. Your heir finds a hardware wallet in a drawer, a seed phrase in a bank box, and no instructions connecting the two. The coins sit there for years — not stolen, just unreachable. That gap between "I own crypto" and "my heir can actually spend it" is what time-locked crypto inheritance tools exist to close.
A time-locked crypto inheritance tool schedules your crypto to move to an heir only after a set delay, and usually only if you fail to check in first. It isn't one product. It's a pattern: a smart contract, a dead-man switch, or a hardware-wallet workflow that holds your keys until a clock runs out. The timer is the easy part. Making sure it fires when you're gone is where most plans fall apart.
How a Time Lock Actually Works
A time lock is a rule written into code or enforced by a service. You deposit funds, name a beneficiary, and pick a delay. If you don't reset the clock before it expires, the contract releases the coins to your heir. That reset is the whole mechanism. Miss it, and the transfer happens. Hit it, and the clock restarts.
Smart contracts vs. service-based switches
On-chain contracts like a dead-man switch live on Ethereum or similar chains. You control them with your own wallet, and no company can freeze them. Service-based tools do the same job off-chain: you get emails or prompts, and a custodian or executor moves the funds. Contracts give you censorship resistance. Services give you a phone number to call when something breaks.
What "reset" looks like in practice
Most tools ask you to sign a small transaction or click a confirmation every few months. Some use a heartbeat: you send a tiny amount of crypto to your own vault. That payment proves you're alive. No payment, no proof, and the release triggers.
Where Hardware Wallets Fit In
Trezor doesn't ship a native inheritance product, and you shouldn't expect it to. What it gives you is a place to store keys that survives your death without being online. The device holds the seed; the seed is the inheritance.
The seed backup is the real inheritance plan
If your heir can't restore the wallet, no timer on earth helps them. A Trezor recovery seed — 12 or 24 words — is enough to rebuild the wallet on any compatible device. So the question isn't "which app has a timer." It's "who can read these words, and when?"
Pairing a Trezor with a time-locked contract
You can hold keys on a Trezor and still use a contract-based switch. The contract watches an address you control. When the timer expires, it sends funds to an address your heir owns. Your Trezor never needs to be online for the release. It just needs to have signed the setup once.
The Mistake That Wipes Out Most Plans
Here's a pattern that repeats. A holder sets a 12-month timer, stores the seed in a bank box, and tells nobody. Eleven months later he dies. His heir finds the box, but the bank needs a death certificate and probate. That takes longer than the remaining month. The contract fires on schedule and sends the coins to an address the heir doesn't know how to access. Funds aren't lost to a hacker. They're lost to paperwork.
Test the handoff while you're alive
Pick a small amount — say $50 worth — and run the whole thing. Set the timer short. Let it trigger. Watch your heir receive it. If they can't, you've found the gap while you can still fix it. A plan you've never tested is a guess.
Don't rely on one signal
Email alone fails. A phone number changes. A heartbeat payment gets forgotten during a hospital stay. Layer at least two signals, and make sure your heir knows the recovery phrase is separate from the timer instructions.
Comparing the Main Approaches
| Approach | Who holds the trigger | Main risk |
|---|---|---|
| On-chain dead-man switch | Smart contract | You forget to reset |
| Service/custodian | The company | Company shuts down |
| Hardware wallet + written instructions | Your heir | Heir can't find the seed |
None of these is strictly better. A contract never forgets, but it also never forgives a missed reset. A service is human and reachable, but it can vanish. A hardware wallet is durable, but it's inert without instructions.
Frequently asked questions
Can I set up crypto inheritance without a smart contract?
Yes. Plenty of people do it with a hardware wallet, a written letter, and a lawyer. The wallet holds the keys, the letter explains how to restore them, and the lawyer handles the legal side. It's slower and less automatic than a contract, but it doesn't depend on any protocol staying alive. For many holders, that trade-off is worth it.
Does Trezor offer a built-in inheritance feature?
Trezor is a hardware wallet, not an inheritance service, so it doesn't ship a native time-lock tool. Its role is key storage and recovery. You pair it with a separate mechanism — a contract, a service, or clear written instructions — to handle the transfer. The seed phrase is what makes any of those mechanisms work.
What happens if I miss a reset on a time-locked contract?
The contract does exactly what it was told. If the delay expires and you haven't reset it, the funds move to the beneficiary address you set. There's no undo button on most designs. That's why short test runs matter before you commit real money to a long timer.
How often should I reset the timer?
It depends on your tool and your comfort level. A common setup checks in every few months, which gives you room to miss one without triggering a release. Whatever interval you pick, put it in a calendar you actually look at, and tell one trusted person it exists.
Write your heir's name and the seed location on paper today, then run a $50 test transfer before the week ends.