2FA

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Two-factor authentication (2FA) is a way to add additional security to your wallet. The first 'factor' is your password for your wallet. The second 'factor' is a verification code retrieved via text message or from an app on a mobile device. 2FA is conceptually similar to a security token device that banks in some countries require for online banking. It likely requires relying on the availability of a third party to provide the service.

Bech32

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Bech32 is a special address format made possible by SegWit (see the feature description for SegWit for more info). This address format is also known as 'bc1 addresses'. Some bitcoin wallets and services do not yet support sending or receiving to Bech32 addresses.

Full Node

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Some wallets fully validate transactions and blocks. Almost all full nodes help the network by accepting transactions and blocks from other full nodes, validating those transactions and blocks, and then relaying them to further full nodes.

Hardware Wallet

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Some wallets can pair and connect to a hardware wallet in addition to being able to send to them. While sending to a hardware wallet is something most all wallets can do, being able to pair with one is a unique feature. This feature enables you to be able to send and receive directly to and from a hardware wallet.

Legacy Addresses

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Most wallets have the ability to send and receive with legacy bitcoin addresses. Legacy addresses start with 1 or 3 (as opposed to starting with bc1). Without legacy address support, you may not be able to receive bitcoin from older wallets or exchanges.

Lightning

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Some wallets support transactions on the Lightning Network. The Lightning Network is new and somewhat experimental. It supports transferring bitcoin without having to record each transaction on the blockchain, resulting in faster transactions and lower fees.

Multisig

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Some wallets have the ability to require more than one key to authorize a transaction. This can be used to divide responsibility and control over multiple parties.

SegWit

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Some wallets support SegWit, which uses block chain space more efficiently. This helps reduce fees paid by helping the Bitcoin network scale and sets the foundation for second layer solutions such as the Lightning Network.