Quote from: fillippone on June 05, 2025, 10:36:07 PM

The Tangem card's design is minimalist, featuring a slim profile with dimensions comparable to the one of a credit card, only barely thicker for durability. It's made from a high-quality plastic material that feels premium to the touch. The card's front typically displays the Tangem logo, and the back includes the card's serial number, NFC symbol, and some essential legal information. A variety of designs are available. I chose the black design which features a totally black, anonymous card, that make the card less obviously relatable to cryptoproducts if found in the wild.

This is a mimicry of standard bank cards. This wallet looks promising from the point of view that you can carry it with you every day and not arouse suspicion (if accidentally discovered by other people).

The only thing is that this card can be stolen, thinking that it is a bank card.

Quote from: fillippone on June 05, 2025, 10:36:07 PM

The card is nearly indestructible, can be submerged, and is not damaged by X-rays (can safely be scanned at airports) or extreme temperatures. The card is also water-resistant, and dust-resistant, and can operate in extreme temperatures, making it suitable for various environments. The cards have been certified with an IP69K certification.

But the card is still subject to burning/melting, right? What is its melting point?

It would be great if the card was made of a flame-retardant material.

Quote from: fillippone on June 05, 2025, 10:36:07 PM

The user can generate your seed phrase in three ways:

Seedless: You let TRNG - True Random Number Generator included in the secure element to generate the seed. The seed is generated and stays within the Secure Element and never leaves it. The Seed never gets online. With this configuration, Tangem is a cold wallet.
Traditional Seed: You use the App to generate the seed and you import the seed in the Tangem Card. The Tangem is actually a Hot Wallet.
Import your Existing Seed Phrase in the Tangem Card. Tangem
has to be considered a Hot Wallet, as you need to input the seed in a mobile phone that is probably connected to the internet, it will be later connected to it.

Seedless: but if you lose/damage the card, then access to the contents of the wallet will be lost forever.
Traditional Seed: App on the phone? This is a great way to compromise the seed phrase.
If it is possible to do this on a PC (preferably without an Internet connection, for example, via Bluetooth, but better via cable), then there are no questions.
Import your Existing Seed Phrase in the Tangem Card: The same. Dangerous for compromise.
Option 4 from the perspective of a potential client: I like option 1, but with the ability to have a backup for recovery.

Quote from: fillippone on June 05, 2025, 10:36:07 PM

What happens if you lose a card?

If you lose one of the cards in your Tangem Wallet set, the impact depends on which and how many cards you still possess, as well as whether you set up a seed phrase during activation:

1. Tangem Wallet Structure and Redundancy

Tangem Wallets are sold as sets of 2 or 3 physical cards, each of which contains an identical copy of your private key generated during the initial setup process. This redundancy ensures that losing a single card does not immediately lock you out of your funds.
During the initial activation, you decide how many cards to include in your backup (typically 2 or 3 cards, each with a copy of your seed depending on the number of cards you bought). Keeping these cards in separate, secure locations is crucial to prevent total loss.

2. Losing a Single Card

Access Remains Intact: As long as you still have at least one of the remaining cards from that set, you can continue to access and manage your funds exactly as before. The lost card by itself cannot be used to drain your assets, because any transaction still requires scanning one of the remaining genuine cards plus your PIN.

Hmm, having additional cards containing an identical copy partially solves the backup issue. But again, I wouldn't consider this option for long-term storage. Only as a temporary "pocket money" for the duration of the trip.

I think this device is a very good idea. Everyone has smartphones and the industry will develop in this direction (hardware wallets for smartphones). Therefore, it was only necessary to eliminate the problems that arise in this case. Card just allows to close the issue with the security of the mobile crypto wallet.

I think that this is a good solution, for example, for traveling as an alternative to carrying the main HW device with you.

Now imagine that instead of a card there will be a ring (like a tangem ring). This gives compactness, mobility and ease of use. With one swipe of your finger, your transaction will be confirmed and most importantly, without the threat of a wallet in the app on the phone. I think the hardware wallets industry will move in this direction (instead of a card there may be other forms, for example, a keychain or something like that). I would like to have the ability to customize. For example, the company sends a "blank" of the card in the form of a capsule, which I can place in any object that fits the size.[/list][/list]