I don't want to share my phone's location data 24/7 to Amazon in order to turn on the lights. Here are the alternative triggers I've tried:

1. Using IFTTT: turn on lights when my android phone connects to a specific WiFi name (my home WiFi)

   Issue: IFTTT requires permission to access my accurate location 24/7 for this applet to work.

2. Using a spare Android phone (always fixed at home) as an IP security camera to detect motion. Using IFTTT to trigger Alexa to turn on the lights when a motion is detected.

   Issue: works, but there is too much lag between me entering my room and the lights turning on: close to 40-75 seconds delay. It would take me much less time to just use a physical switch to turn it on (4 seconds).

3. Buying a WiFi based door sensor.

   Issue: Same issue as above. It works better than motion detection but there is still too much latency, close to 20 seconds. I would much rather turn the lights on using my hand (4 seconds)

Perhaps Zigbee may be faster but that's not option right now because all my other smart home devices are based on non-hub / direct WiFi.

Any other ideas?