![hp smart card reader hp smart card reader](https://cdn11.bigcommerce.com/s-pxeya1fryb/images/stencil/1280x1280/products/935/1367/821188-001__67638.1588082546.jpg)
The readerList string will contain a multi-string of Extract each reader from the returned list. If ((this._lastErrorCode = SmartcardErrorCode.None)) (SmartcardErrorCode)UnsafeNativeMethods.ListReaders(this._context, Retrieve the list of smartcard readers. String readerList = new string('\0', size) to store the list of smartcard readers. Allocate a string of the proper size in which Int size = this.GetReaderListBufferSize()
![hp smart card reader hp smart card reader](https://5.imimg.com/data5/XF/UB/GLADMIN-67006090/hp-business-slim-smartcard-keyboard-500x500.png)
retrieving the list of smartcard readers.
![hp smart card reader hp smart card reader](https://cdn11.bigcommerce.com/s-pxeya1fryb/images/stencil/1280x1280/products/1201/1875/821695-001__21191.1598450340.png)
Make sure a context has been established before Return (this._lastErrorCode = SmartcardErrorCode.None) IntPtr.Zero, IntPtr.Zero, ref this._context) (SmartcardErrorCode)UnsafeNativeMethods.EstablishContext(ScopeOption.System, Static internal extern uint ListReaders(SmartcardContextSafeHandle context, string groups, IntPtr reserved2, ref SmartcardContextSafeHandle context) Static internal extern uint EstablishContext(ScopeOption scope, IntPtr reserved1, If I look at it in Device Manager, it doesn't show up under the "Smart card readers" until a card is inserted, too (unless I go to View > Show Hidden Devices).ĭoes anyone know why this is or if there's a way to make sure it gets listed in my software? Strangely, the Alcor reader will only get listed when a Smart Card is inserted. It's been tested with a dozen or so models with no issues. Some of our systems will have 3 or 4 readers plugged in to a single computer. The code below will list all readers on a system and seems to work fine. I just received a new laptop (HP EliteBook 8470p) that has a built-in Alcor Micro USB Smart Card Reader.
HP SMART CARD READER SOFTWARE
I've had this software running in production for years and never seen this problem before.