Curve Payment Ring Guide. Use Multiple Cards With One Wearable

A payment ring makes contactless payments simpler. Curve can make that same experience more flexible.

Instead of carrying several cards or choosing between them before every payment, Curve lets you connect multiple cards to one account. When used with an Astari payment ring, bracelet, or keychain, it can give one wearable access to several payment cards through a single contactless setup.

For many customers, this is one of the easiest ways to use a payment wearable with their existing bank card, especially if their bank is not directly supported.

What Is Curve?

Curve is a digital wallet and payment card service that lets you connect multiple debit and credit cards to one Curve card.

Instead of carrying different cards for different situations, you can add them to Curve and choose which one you want to use inside the Curve app.

When Curve is connected to a payment ring or wearable, Curve acts as the bridge between your wearable and your existing payment cards. Your wearable is linked to Curve, and Curve then routes the payment to the card you selected.

If you are new to wearable payments, it may help to first read What Are Contactless Payment Wearables? and How Does a Payment Ring Work?.

Why Use Curve With a Payment Ring?

On its own, a payment ring already makes everyday payments easier. You can tap and pay without reaching for your wallet or unlocking your phone.

With Curve, the experience becomes more flexible because one wearable can connect to multiple cards.

You might use one card for daily spending, another for travel, and another for business expenses. Curve lets you manage those cards in one place, while your Astari wearable keeps the payment experience simple at the terminal.

This is especially useful if you want to pay without a wallet or phone, but still keep control over which card is used behind the scenes.

How Curve Works With an Astari Wearable

Astari wearables use passive NFC technology. They contain no battery, no Bluetooth, and no charging components.

Once your wearable is set up, it communicates with a contactless payment terminal in a similar way to a contactless bank card. The wearable changes how you access the payment, not the banking infrastructure behind it.

Curve sits behind that payment experience. Your wearable connects to your Curve card, and Curve connects to the cards you have added in the Curve app.

At the terminal, the experience remains simple. You tap your ring, bracelet, or keychain. Behind the scenes, Curve handles which connected card is charged.

How to Connect Curve to Your Payment Ring or Wearable

Setting up Curve with an Astari wearable only needs to be done once.

Download the Curve app and create your Curve account.
Add your existing debit or credit cards to Curve.
Activate your Curve card, either virtual or physical.
Open the Manage Mii app.
Connect your Curve card to your Astari payment ring, bracelet, or keychain.
Once activated, tap and pay wherever contactless payments are accepted.

Your wearable connects to your Curve card credentials. This can be either a standard virtual Curve card or a physical Curve card, depending on your Curve setup.

You can follow the full wearable setup process in the Astari setup guide, and check compatibility on the Supported Banks page.

Can You Use Multiple Cards With One Payment Ring?

Yes. By using Curve, you can connect multiple cards and use one payment ring as your contactless access point.

This is one of the strongest benefits of combining Curve with a payment wearable. You keep the simple tap and pay experience, while Curve gives you more control over which card is used.

For example, you may choose a personal card for everyday purchases, a travel card while abroad, or a business card for work expenses.

You still pay with one wearable, but you can manage the payment source inside Curve.

Changing the Card After You Pay

One of Curve's most useful features is the ability to move a transaction from one card to another after the payment has already been made.

This is useful if you accidentally paid with the wrong card, or if you later decide that another card would have been better for that transaction.

For payment wearable users, this adds flexibility without adding friction at the terminal. You still tap and pay quickly, while Curve gives you more control afterward.

A Practical Solution if Your Bank Is Not Supported

Not every bank supports direct connection to payment wearables.

Curve solves this for many customers by acting as a bridge between your existing bank card and your Astari wearable.

Instead of changing banks or waiting for direct support, you can add a compatible card to Curve and then connect Curve to your wearable.

This makes Curve one of the most practical setup options for many users across Europe and the United Kingdom.

You can check direct compatibility on the Supported Banks page.

Using Curve With a Payment Ring While Travelling

Curve is also useful when travelling.

You may want to use different cards for different countries, spending types, or currencies. With Curve, you can keep several cards available inside one app, while your payment ring remains the simple way to pay at the terminal.

This works especially well with passive payment wearables because the ring itself does not need battery, mobile signal, or Bluetooth during payment.

If travel is one of your main use cases, you may also find helpful: Payment Ring for Travel.

Can You Use a Samsung Pay Curve Card?

This is one of the most common Curve setup issues.

If you use Samsung Pay, you may have a virtual Curve card inside Samsung Pay. That version of Curve cannot be connected to an Astari payment wearable.

The reason is that the Samsung Pay version is provisioned differently and cannot be tokenized for the wearable in the same way as a standard Curve card.

To connect Curve to your wearable, you need a standard Curve card setup rather than the Samsung Pay virtual Curve version.

How to Fix the Samsung Pay Curve Issue

If your Curve account is linked to the Samsung Pay version, the solution usually requires a reset.

You need to delete your Curve account and create a new one, making sure you receive a standard Curve setup instead of the Samsung Pay version.

Once you have the correct Curve setup, you can connect it to your Astari wearable through the Manage Mii app.

After that, your payment ring, bracelet, or keychain should work as expected.

Is Curve With a Payment Wearable Secure?

Yes. Payments made with Astari wearables use the same secure contactless payment infrastructure as modern bank cards.

Your actual card details are not shared at the payment terminal. Instead, secure tokenized payment credentials are used during the transaction.

Astari wearables do not introduce a new payment system or alternative security standard. They use the same trusted banking networks, contactless infrastructure, fraud protections, and PIN rules people already use with contactless cards.

For higher value payments, PIN verification may still be required at the terminal, just like with a regular card.

You can learn more in Are Payment Rings Safe? and the NFC vs RFID Guide.

Why Curve and Astari Work Well Together

Astari wearables are designed for simplicity. Curve adds flexibility without making the payment moment more complicated.

You still tap and pay in the same natural way. There is no battery to charge, no phone to unlock, and no extra action at the terminal.

Behind that simple tap, Curve gives you more control over which card is used, how you manage spending, and how you handle payments across different situations.

This combination works especially well for people who use multiple cards, travel regularly, manage personal and business expenses, or want to use a payment wearable when their bank is not directly supported.

If you are comparing wearable formats, you may also find helpful: Payment Ring vs Bracelet vs Keychain.

A Smarter Way to Use a Simple Payment Method

A payment ring already makes contactless payments easier. Curve makes that same experience more flexible.

You keep the effortless tap and pay moment, while gaining more control over the cards behind it.

That is why Curve and Astari work so well together. The ring keeps payments simple. Curve keeps your card setup flexible.

If you are ready to explore wearable payment options, view the Payment Rings Collection.

Frequently Asked Questions

Can you use multiple cards with a payment ring?

Yes. By using Curve, you can connect multiple cards and use one payment ring as your contactless payment method.

Do you need a physical Curve card?

No. Astari wearables can be connected using either a virtual Curve card or a physical Curve card, depending on your Curve setup.

Can you change the card after paying?

Yes. Curve allows eligible transactions to be moved from one connected card to another after payment.

Why does my Samsung Pay Curve card not work?

The Samsung Pay version of Curve is provisioned differently and cannot be connected to a payment wearable in the same way as a standard Curve card setup.

How do I fix the Samsung Pay Curve issue?

You need to reset your Curve setup by creating a new Curve account and making sure you use a standard Curve setup instead of the Samsung Pay version. You can then connect that through Manage Mii.