Hi, Our PC/SC IFD Handler plugin loaded and running inside of com.apple.ifdhandler system process stops working on BigSur because the TCC engine denies com.apple.ifdhandler access to bluetooth. Our IFD Handler communicates via BLE to the SmartCardReader. Here the relevant messages from the log AUTHREQATTRIBUTION: msgID=4121.1, attribution={responsible={identifier=com.apple.ifdreader, pid=4115, auid=0, euid=0, responsiblepath=/System/Library/CryptoTokenKit/com.apple.ifdreader.slotd/Contents/MacOS/com.apple.ifdreader, binarypath=/System/Library/CryptoTokenKit/com.apple.ifdreader.slotd/Contents/MacOS/com.apple.ifdreader}, requesting={identifier=com.apple.ifdbundle, pid=4121, auid=0, euid=0, binarypath=/System/Library/CryptoTokenKit/com.apple.ifdreader.slotd/Contents/XPCServices/com.apple.ifdbundle.xpc/Contents/MacOS/com.apple.ifdbundle}, }, standard 15:21:59.836608+0100 tccd AUTHREQSUBJECT: msgID=4121.1, subject=com.apple.ifdreader, 15:21:59.836956+0100 tccd Refusing TCCAccessRequest for service kTCCServiceBluetoothAlways from client Sub:{com.apple.ifdreader}Resp:{identifier=com.apple.ifdreader, pid=4115, auid=0, euid=0, responsiblepath=/System/Library/CryptoTokenKit/com.apple.ifdreader.slotd/Contents/MacOS/com.apple.ifdreader, binary_path=/System/Library/CryptoTokenKit/com.apple.ifdreader.slotd/Contents/MacOS/com.apple.ifdreader} in background session We tried to add com.apple.security.device.bluetooth entitlement to our plugin and also we added NSBluetoothAlwaysUsageDescription and NSBluetoothPeripheralUsageDescription to its Info.plist file but nothing works Does anyone know how to allow platform binary to access bluetooth? if not, all plugins written that runs inside of platform process will not be able to access bluetooth.