Early reports of delays in Bluetooth LE-based HomeKit Smart Home devices are coming true.
A Forbes article today attributes delays in the availability of Bluetooth-based HomeKit home automation products to problems implementing advanced encryption techniques Apple requires in the specification.
Stacey Higginbotham's May report in Fortune was the first indicator of trouble in HomeKit-land, reporting larger-than-expected code requirements that exceeded the memory available in small battery-powered devices.
Today's article expands on the reasons for product delays, citing processing and memory loads greater than Blueooth LE-based devices can handle due to 3072-bit key and other advanced encryption requirements.
The article quoted an elgato spokesperson who said their first HomeKit efforts using Bluetooth LE required 40 seconds to figure out if a door was open or closed. Another report from a "source who requested anonymity to protect his relationship with Apple said lag times reached 7 minutes when his companys device tried to use the HomeKit protocol through Bluetooth LE". elgato has since solved the problems by "tweaking firmware" and adding more memory.
Wi-Fi based Homekit products and those using gateways like the recently-reviewed Insteon HomeKit-enabled hub, don't face these problems due to more powerful (and power-hungry) chipsets and memory baked into products.