Lua Requires Chilkat v9.5.0.87+

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. Lua

local chilkat = require("chilkat")

-- This example requires the Chilkat API to have been previously unlocked.
-- See Global Unlock Sample for sample code.

local scard = chilkat.SCard.new()

-- First establish a context to the PC/SC Resource Manager
local success = scard:establish_context("user")
if not success then
    print(scard.last_error_text)
    return
end

local stReaders = chilkat.StringTable.new()
success = scard:list_readers(stReaders)
if not success then
    print(scard.last_error_text)
    return
end

local numReaders = stReaders.count
local i = 0
while i < numReaders do
    print(i .. ": " .. stReaders:string_at(i))
    i = i + 1
end

-- 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.
success = scard:release_context()
if not success then
    print(scard.last_error_text)
end