Skip to content

Finance

Enable Seamless, Secure Wallet Transactions with Ultrasonic Verification

LISNR connects payments between devices through one communication channel — sound.

The payments landscape is evolving rapidly, and LISNR’s Radius is helping wallet providers create more secure, frictionless, and innovative experiences. From peer-to-peer transfers to merchant payments, ultrasonic technology ensures transactions are verified instantly, even with limited connectivity. Combined with Quest, our gamification platform, wallets can also reward users for engagement and loyalty actions.

Introducing Radius: All-in-One Payment & Verification Solution

The Radius Ultrasonic SDK, engineered by LISNR, is the leading ultrasonic solution for digital payments.

By transmitting signals from a device’s speaker to a receiving device’s microphone, Radius completes authentication, payment verification, and promotional interactions in real time. Users can send or receive funds, validate transactions, and redeem offers — all instantly and securely. Quest integrates seamlessly to provide gamified rewards for usage, referrals, or merchant interactions.

Macro Use Cases: How Financial Services Companies Use Ultrasonic Technology

Innovative payment technologies such as data-over-sound play a crucial role in shaping the future of transaction verification. Industry leaders use LISNR’s ultrasonic data transmission for proximity verification, authentication, transaction validation, and targeted offers & loyalty, allowing wallet providers to streamline all transaction experiences.

Proximity Verification

Detect when users are near a merchant terminal or another peer for quick, secure interactions.

  • Expedite peer-to-peer transfers
  • Trigger in-store wallet payments instantly
  • Reduce transaction friction

Radius tones enable instant detection, so transactions can be authenticated even in crowded, loud, or offline environments, providing a frictionless and safe experience.

Authentication

Verify device presence and user identity simultaneously.

  • Prevent fraud or unauthorized payments
  • Confirm merchant or peer device interactions
  • Maintain secure verification without network dependency

Ultrasonic authentication ensures trust in every transaction, whether P2P, P2M, or M2P, without relying on barcodes, QR codes, or NFC hardware.

Transaction Validation

Confirm payments and wallet transfers securely and instantly. Send receipts back to the consumer device while keeping a digital record for all transactions.

  • Enable offline P2P transfers
  • Validate in-store purchases without connectivity
  • Ensure accurate fund transfers

Radius delivers reliable, real-time verification while Quest can instantly reward users for completing transactions, encouraging engagement and repeat usage.

Targeted Offers & Loyalty

Deliver personalized promotions or rewards at the exact moment of intention, before the transaction.

  • Trigger cashback, points, or discounts for wallet usage
  • Encourage merchant participation through gamified campaigns
  • Engage users with location-specific incentives

Ultrasonic technology enables hyper-contextual offers that are impossible to achieve with traditional BLE, NFC, or QR-based systems.

Increase Transaction Totals

Authenticate and reward users simultaneously during transactions.

Secure Transactions

Protect sensitive payment data with hands-off, tone security protocols.

Consumer Presence Detection

Understand when and where users interact with merchants or peers. Detect consumers upon entry and in-aisle.

Up-to-Date Analytics

Analyze transaction verification and engagement data to optimize campaigns.

Offline Transactions

Ensure uninterrupted P2P or P2M transfers without network dependency (data sync needed once every 24 hours).

Incentivize Usage

With Quest, wallets can gamify transactions, referrals, and merchant visits to boost engagement.

Micro Use Cases for Financial Services

What else can you do once proximity is established?

With LISNR’s ultrasonic technology, you can create a smarter, more responsive payment network that meets the evolving needs of modern cities addressing everyday operational needs and consumer expectations.

Peer-toPeer (P2P)
Radius enables instant, secure wallet-to-wallet transfers between friends or contacts without network dependency. Users can send funds in real time, while Quest rewards referrals or repeated usage.
Peer-to-Merchant (P2M)
Radius allows wallet payments at merchants to be verified instantly at checkout, speeding up in-store transactions and enabling targeted offers before the point of sale.
Merchant-to-Peer (M2P)
Radius empowers merchants to send real-time refunds, rebates, or reward credits directly to consumers’ wallets, ensuring frictionless interactions and enhanced customer trust.

Comparing Ultrasonic to Alternative Modalities

Which modalities are best suited for your initiatives? See how they compare here.

When it comes to payment technologies, ultrasonic technology stands out as a versatile and reliable solution. In a head-to-head of payment technology, ultrasonic technology surpasses traditional modalities like Bluetooth (BLE), RFID, and NFC in terms of precision, versatility, reliability, accessibility, and battery consumption.

01.

Ultrasonic vs Bluetooth (BLE)

Ultrasonic technology offers several advantages over Bluetooth (BLE), including the ability to work without internet connectivity and compatibility with a wide range of smartphones and devices. Digital Wallet agencies can seamlessly integrate ultrasonic technology into existing systems without significant investment in infrastructure.Ā 

BLE bleeds through walls, making it nearly impossible to narrow down the presence of a customer. Without the ability to bleed through walls, Radius uses the properties of sound to its advantage to connect drivers to riders.

02.

Ultrasonic vs NFC

Ultrasonic technology outperforms NFC in several key aspects in the realm of contactless communication. Unlike NFC, which relies on hardware-specific devices and is not globally available on all mobile devices, ultrasonic tech is accessible on any handheld device with a microphone and speaker.Ā 

Ultrasonic stands above the competition by offering long-distance (30+ Feet) encrypted payloads.

03.

Ultrasonic vs QR Codes

Ultrasonic technology offers a more versatile, secure alternative to QR codes, which have long been used for access control in payment systems. QR codes rely on visible identification methods that are easily spoofed and compromise security. Additionally, QR codes require cameras and online connectivity for data retrieval.Ā 

Ultrasonic technology eliminates the need for visible identification and internet access, enhancing efficiency and security in transit technology.

Related Blogs

Dive into the latest expert analysis, trend reports, and forward-thinking perspectives from LISNR – written and curated for digital wallet leaders who dare to imagine the possibilities and achieve the remarkable.

Get Started With LISNR's Ultrasonic Software Today

The future of digital wallets is here, and it is powered by ultrasonic technology.Ā 

With its superior accuracy, security, and global accessibility, ultrasonic proximity verification is set to revolutionize the mass transit industry, creating a more efficient, personalized, and connected public transportation software system for all.

Contact us now to embrace the future of payment technology with LISNR and discover how data-over-sound can transform your solutions today.

"*" indicates required fields

This field is for validation purposes and should be left unchanged.
Country/Region*
Marketing and sales content*