Foundation Passport vs Keystone 3 Pro

Comparing: two wallets
Decided by: Editorial rating
Last reviewed: 2026-08-26

Bitcoin-only hardware from a US company, now sold as the $349 Passport Prime: keys, two factor codes, security keys and encrypted storage in one device.

Keystone 3 Pro4.4

Air-gapped signing on a 4 inch touchscreen, with three security chips and a fingerprint reader, at $149.

Verdict: Keystone 3 Pro

Keystone 3 Pro rates higher on our rubric: 4.4 against 4.3 for Foundation Passport.

Criterion: Editorial rating
Foundation Passport: 4.3
Keystone 3 Pro: 4.4

Foundation Passport and Keystone 3 Pro, fact by fact

Every row is from the two reviews as of their review dates, with sources on each. A check marks the side a decidable criterion favours; rows without one are information, not a score.

Foundation Passport and Keystone 3 Pro compared fact by fact from their reviews; a check marks the side a decidable criterion favours.
Fact	Foundation Passport	Keystone 3 Pro
Editorial rating	4.3	4.4 (favoured on this row)
Status	Available	Available
Made by	Foundation Devices	Keystone
Price	$349	$149
Who holds the keys	self-custodial, keys held on dedicated hardware and isolated from sandboxed apps by the KeyOS microkernel	self-custodial, seed split across three independent security chips, air-gapped by QR code and microSD
Bitcoin-only	Yes	No
Runs on	iOS, Android	iOS, Android
Screen	Not stated	4 inch color LCD touchscreen with fingerprint unlock
Connectivity	QuantumLink encrypted Bluetooth through a dedicated chip, plus NFC and USB for security key use; setup and updates run through the Envoy app	QR codes and microSD for signing, with no USB or Bluetooth data path; WebUSB firmware updates only with air-gap mode off
Released	Not stated	Not stated
Countries on the maker's list	No published list	56
Last reviewed	2026-08-26	2026-08-25

Pros and cons, side by side

Foundation Passport

What works

Bitcoin only, with open source apps and a published independent audit quote
KeyOS sandboxes apps so a compromised app cannot reach the master keys
Bluetooth runs through a dedicated chip rather than the processor holding your secrets
Envoy is distributed on F-Droid as well as the App Store and Google Play
Assembled in the USA, which matters if supply chain provenance is part of your threat model

What to watch

$349 is well above most bitcoin-only signers
Passport Core, the cheaper earlier model, has been discontinued
No reachable country list: the terms name a Shipping Policy that is not published anywhere, and Foundation may refuse an order over export or sanctions concerns
A smaller company with a shorter public track record than Ledger, Trezor or Coinkite

Keystone 3 Pro

What works

Three secure element chips, against one on Ledger's and Trezor's flagship devices
A 4 inch touchscreen that shows full transaction detail, including decoded contract data
Fully air-gapped: signing happens over QR codes or microSD, never USB or Bluetooth
Fingerprint unlock and anti-tamper protection that wipes data if the case is opened
Dice-roll entropy, Shamir backup and BIP-129 multisig, a standard Keystone co-authored

What to watch

Not bitcoin-only, so multi-chain parsing code runs on the device
Keystone's shipping page claims worldwide delivery and then publishes a 56 country list
Air-gapped signing means scanning QR codes for every transaction, which is slower than plugging in a cable
A newer brand with a shorter public track record than Ledger or Trezor

Frequently asked questions

Is Foundation Passport or Keystone 3 Pro better?

Keystone 3 Pro rates higher on our rubric: 4.4 against 4.3 for Foundation Passport. The rating follows the product rubric published on our about page; the rows above set custody, price and platforms side by side so you can check it.

Which is cheaper, Foundation Passport or Keystone 3 Pro?

Keystone 3 Pro, at $149 against $349, on each maker's own store price as of the review date.

Is Foundation Passport or Keystone 3 Pro bitcoin-only?

Foundation Passport is bitcoin-only; Keystone 3 Pro supports other assets too. Multi-asset: Keystone counts more than 5,000 coins and tokens and over 45 compatible software wallets

The full reviews: Foundation Passport and Keystone 3 Pro, each with its sources, and every wallet we review.

More comparisons

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