1) The document discusses trends and challenges in the emerging field of the Internet of Things (IoT), which connects physical objects through internet connectivity and sensors.
2) Key enabling technologies for IoT include RFID, NFC, barcodes, QR codes, IPv6, and Bluetooth Smart devices.
3) Major issues in implementing IoT on a large scale involve lack of standardization, managing the huge number of connected devices, ensuring real-time performance, and addressing privacy and security threats posed by interconnected devices.