PC/SC-lite is a middleware to access a smart card using SCard API (PC/SC) Its purpose is to provide a Windows(R) SCard interface in a very small form factor for communicating to smart cards and readers. Compiling with "DEBUGATR=1 ./pcsc-lite.SlackBuild" enables ATR parsing debug output messages. On-demand power on (auto power off) feature for an inserted card is disabled, now. If you want it re-enabled, so the card is powered off after a few seconds of inactivity (upstream's default since version 1.6.5) you can compile with "AUTOPOFF=1 ./pcsc-lite.SlackBuild". pcsc-lite no longer uses (deprecated) libhal for smart-card reader's detection. By default libudev is used now. You need to add a user pcscd (257) and a group pcscd (257). Please see README.SLACKWARE in pcsc-lite's documentation directory for notes.