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Fetch the complete documentation index at: https://mintlify.com/stripe/stripe-terminal-react-native/llms.txt

Use this file to discover all available pages before exploring further.

Before you can take a payment, you need to discover and connect to a reader. The discovery flow has three steps:
1

Call discoverReaders

Pass a DiscoverReadersParams object specifying the discovery method and any options. The call is long-running — it does not return until discovery ends or is cancelled.
2

Receive reader updates

As readers are found, the onUpdateDiscoveredReaders callback fires with the current list of discovered Reader.Type objects.
3

Connect or cancel

Call connectReader with a discovered reader to establish a connection, or call cancelDiscovering to stop discovery.
import { useEffect, useState } from 'react';
import { useStripeTerminal } from '@stripe/stripe-terminal-react-native';
import type { Reader } from '@stripe/stripe-terminal-react-native';

function DiscoveryScreen() {
  const [readers, setReaders] = useState<Reader.Type[]>([]);

  const { discoverReaders, cancelDiscovering, connectReader } =
    useStripeTerminal({
      onUpdateDiscoveredReaders: (discovered) => {
        setReaders(discovered);
      },
      onFinishDiscoveringReaders: (error) => {
        if (error) console.error('Discovery finished with error:', error);
      },
    });

  useEffect(() => {
    discoverReaders({
      discoveryMethod: 'bluetoothScan',
      simulated: true,
    });

    return () => {
      cancelDiscovering();
    };
  }, [discoverReaders, cancelDiscovering]);

  const handleConnect = async (reader: Reader.Type) => {
    const { reader: connectedReader, error } = await connectReader({
      discoveryMethod: 'bluetoothScan',
      reader,
      locationId: 'tml_your_location_id',
    });
    if (error) console.error('Connect error:', error);
    else console.log('Connected to:', connectedReader?.serialNumber);
  };

  return null; // render your reader list UI here
}

​
Discovery methods

The discoveryMethod field on DiscoverReadersParams determines which transport the SDK uses to scan for readers.
iOS supports bluetoothScan, bluetoothProximity, internet, tapToPay, and usb (USB is in private preview for iPads with M-series chips).

​
bluetoothScan

Scans for Bluetooth LE readers in the vicinity.
type DiscoverBluetoothScanParams = {
  discoveryMethod: 'bluetoothScan';
  timeout?: number;    // Seconds before discovery times out
  simulated?: boolean; // Use simulated reader for testing
};

discoverReaders({ discoveryMethod: 'bluetoothScan', simulated: true });

​
bluetoothProximity

Discovers a single Bluetooth reader that is held in very close physical proximity to the device (used with the Chipper 1X and Chipper 2X).
type DiscoverBluetoothProximityParams = {
  discoveryMethod: 'bluetoothProximity';
  simulated?: boolean;
};

discoverReaders({ discoveryMethod: 'bluetoothProximity', simulated: false });

​
internet

Discovers readers registered to your Stripe account that are connected to the internet.
type DiscoverInternetParams = {
  discoveryMethod: 'internet';
  timeout?: number;
  simulated?: boolean;
  locationId?: string;               // Filter by Stripe location ID
  discoveryFilter?: DiscoveryFilter; // Filter by reader ID or serial number
};

discoverReaders({
  discoveryMethod: 'internet',
  locationId: 'tml_your_location_id',
  discoveryFilter: { serialNumber: 'STR_S700_1234' },
});

​
tapToPay

Uses the NFC chip built into the iOS device to accept contactless payments (requires iOS 16+ and a supported device).
type DiscoverTapToPayParams = {
  discoveryMethod: 'tapToPay';
  simulated?: boolean;
};

discoverReaders({ discoveryMethod: 'tapToPay', simulated: false });

​
usb (private preview)

Discovers readers connected via USB. Available on iPads with M-series chips.
type DiscoverUsbParams = {
  discoveryMethod: 'usb';
  timeout?: number;
  simulated?: boolean;
};

​
DiscoveryFilter

For the internet discovery method you can narrow results to a specific reader: 
// No filter — returns all readers at the location
type DiscoveryFilterNone = {};

// Filter by Stripe reader ID
type DiscoveryFilterReaderId = {
  readerId: string;
};

// Filter by hardware serial number
type DiscoveryFilterSerialNumber = {
  serialNumber: string;
};

​
The Reader.Type object

Each discovered reader is represented as a Reader.Type object: 
export type Reader.Type = {
  id: string;
  serialNumber: string;
  deviceType: Reader.DeviceType;
  locationStatus: LocationStatus;    // 'notSet' | 'set' | 'unknown'
  location?: Location;
  locationId?: string;
  label?: string;
  batteryLevel?: number;
  deviceSoftwareVersion?: string;
  availableUpdate?: Reader.SoftwareUpdate;
  status: Reader.NetworkStatus;      // 'online' | 'offline'
  ipAddress?: string;
  simulated?: boolean;
  livemode?: boolean;
  // iOS-only
  batteryStatus?: Reader.BatteryStatus; // 'critical' | 'low' | 'nominal' | 'unknown'
  isCharging?: number;
};

​
DeviceType enum

The deviceType field identifies the reader hardware model: 
export type Reader.DeviceType =
  | 'chipper1X'
  | 'chipper2X'
  | 'stripeM2'
  | 'wiseCube'
  | 'wisePad3'
  | 'wisePosE'
  | 'wisePosEDevkit'
  | 'wisePad3s'
  | 'stripeS700Devkit'
  | 'stripeS700'
  | 'stripeS710Devkit'
  | 'stripeS710'
  | 'cotsDevice'
  | 'tapToPay'
  | 'etna';

​
SoftwareUpdate

If availableUpdate is set on a discovered reader, a firmware update is available: 
export type Reader.SoftwareUpdate = {
  deviceSoftwareVersion: string;
  estimatedUpdateTime:
    | 'estimateLessThan1Minute'
    | 'estimate1To2Minutes'
    | 'estimate2To5Minutes'
    | 'estimate5To15Minutes';
  requiredAt?: string; // ISO 8601 date after which connection is blocked until updated
};

​
EasyConnect

easyConnect is a convenience method that combines discovery and connection into a single call. Use it when you want to connect to a reader without managing the discovery lifecycle manually. 
export type EasyConnectParams =
  | EasyConnectInternetParams
  | EasyConnectTapToPayParams
  | EasyConnectAppsOnDevicesParams;

export type EasyConnectInternetParams = {
  discoveryMethod: 'internet';
  timeout?: number;
  simulated?: boolean;
  locationId?: string;
  discoveryFilter?: DiscoveryFilter;
  failIfInUse?: boolean;  // Fail if the reader is already in use by another POS
};

export type EasyConnectTapToPayParams = {
  discoveryMethod: 'tapToPay';
  simulated?: boolean;
  locationId: string;   // Required
  autoReconnectOnUnexpectedDisconnect?: boolean;
  merchantDisplayName?: string;
  onBehalfOf?: string;
  tosAcceptancePermitted?: boolean;
};

export type EasyConnectAppsOnDevicesParams = {
  discoveryMethod: 'appsOnDevices';
};

const { easyConnect, cancelEasyConnect } = useStripeTerminal();

// Connect to an internet reader at a specific location in one step
const { reader, error } = await easyConnect({
  discoveryMethod: 'internet',
  locationId: 'tml_your_location_id',
});

if (error) {
  console.error('EasyConnect failed:', error);
} else {
  console.log('Connected via EasyConnect to:', reader?.serialNumber);
}
Use easyConnect for simple integrations where you have a specific location or reader in mind. Use discoverReaders + connectReader when you need to display a reader picker UI to the user.

​
Android permissions

For Bluetooth discovery on Android, the SDK requires location and Bluetooth permissions. Use the provided utility to request them before starting discovery: 
import { requestNeededAndroidPermissions } from '@stripe/stripe-terminal-react-native';

await requestNeededAndroidPermissions();

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