React Native

PC/SC List Smart Card Readers (and USB Tokens)

See more SCard Examples

Demonstrates how to list the smart card readers and USB tokens connected to the computer.

Note: This functionality was introduced in Chilkat v9.5.0.87.

React Native

import { SCard, StringTable } from '@chilkat/react-native'

function chilkatExample() {
  // This example requires the Chilkat API to have been previously unlocked.
  // See Global Unlock Sample for sample code.

  const scard = new SCard();

  // First establish a context to the PC/SC Resource Manager
  try {
    scard.establishContext('user');
  } catch {
    console.log(scard.lastErrorText);
    return;
  }

  const stReaders = new StringTable();
  try {
    scard.listReaders(stReaders);
  } catch {
    console.log(scard.lastErrorText);
    return;
  }

  const numReaders = stReaders.count;
  let i = 0;
  while (i < numReaders) {
    console.log(`${i}: ${stReaders.stringAt(i)}`);
    i++;
  }

  // Sample output:
  // 0: Alcor Micro USB Smart Card Reader 0
  // 1: FS USB Token 0
  // 2: FT Java Token 0
  // 3: SCM Microsystems Inc. SCR33x USB Smart Card Reader 0
  // 4: Yubico YubiKey OTP+FIDO+CCID 0

  // Applications should always release the context when finished.
  try {
    scard.releaseContext();
  } catch {
    console.log(scard.lastErrorText);
  }
}