What Is Web3, and How Does Your Wallet Fit Into It?
You may have heard the term "Web3" alongside crypto wallets. Here's what it means, and how different wallets serve different purposes.
Published September 15, 2026 · 2 min read
What Web3 means
"Web3" is a general term for internet applications and services built on blockchain technology, as opposed to traditional web services run entirely on a single company's own servers. The idea is that data and transactions are recorded on a public, distributed ledger rather than controlled by one central provider. Examples include decentralized finance platforms, blockchain-based games, and digital identity systems.
How a wallet is used in Web3
A crypto wallet is one of the most common ways people interact with Web3 services, since it is used to hold funds and sign transactions when using blockchain-based applications. When you connect a wallet to a Web3 application, you are authorizing that app to read your wallet address and, if you approve, to initiate transactions that you then confirm. The wallet acts as your identity and authentication method in the Web3 ecosystem.
Not every wallet is built for broad Web3 use
Not every crypto wallet is built primarily for exploring the wider Web3 ecosystem — some, like a wallet-plus-card product, focus specifically on holding and spending a balance rather than interacting with many different blockchain applications. A wallet optimized for spending may support fewer networks, fewer token types, or fewer app integrations than a wallet designed for Web3 exploration. The trade-off is often simplicity and ease of use for everyday transactions.
How Nexus Pay fits into this picture
Understanding this distinction matters because "Web3 wallet" marketing sometimes implies broad compatibility with many blockchain applications, a different feature set from a wallet optimized for everyday spending through a card. Nexus Pay is a wallet with a Visa card, funded across six networks, with in-app coin swaps and ATM withdrawals. It is built for holding and spending crypto as part of daily life, not for connecting to a wide range of Web3 applications. If your goal is to use a card funded by crypto, this focus is an advantage; if your goal is to explore many blockchain apps, a different wallet may be a better fit.
Common questions
Can I use Nexus Pay to connect to Web3 apps?
Nexus Pay is optimized for holding and spending through a card, not for broad Web3 app integration; if connecting to many blockchain applications is your priority, a wallet designed for that purpose may be more suitable.
What does it mean to "sign a transaction" in Web3?
Signing a transaction means using your wallet's private key to approve an action on the blockchain, like sending funds or interacting with a smart contract; the wallet does this without sharing the private key itself.
Is Web3 the same as cryptocurrency?
No — cryptocurrency is a type of digital asset; Web3 refers to internet applications and services built on blockchain technology, which may or may not involve cryptocurrency as part of their function.
Do I need to understand Web3 to use a crypto card?
No — using a card funded by a crypto wallet is straightforward and does not require understanding or interacting with Web3 applications; the card works like any Visa card once funded.
Related reading
Crypto Terminology Glossary: Key Wallet Terms ExplainedA plain-language guide to wallet, transaction, and blockchain terms. Understand seed phrases, networks, gas fees, KYC, and more without the jargon.
Custodial vs Non-Custodial Crypto Wallets: Which Fits a Spending CardCustodial wallets let the provider manage keys and recovery; non-custodial wallets give you full control. Compare trade-offs for everyday card spending.
Centralized Exchange vs a Wallet with a Card: What's the DifferenceA centralized exchange and a wallet with a card serve different purposes. Learn what each is built for and which fits your needs for holding and spending…
What does it mean that a cryptocurrency is decentralized?Decentralized means many participants keep and agree on the record, not one authority. Here is what that does and doesn't guarantee for your money.