Over exposure to technology before bed is not recommended. Common sources of blue light include TV’s tablets, smartphones, video games, we could go on…
Blue light actually suppresses the body’s release of melatonin. Often making it impossible to switch-off when it’s time for bed.
Ditching the tech 1-2 hours before bedtime is advisable, but If that’s too much to bear, dimming the brightness of your electronic devices will help to reduce emissions of blue light.
Another option would be to ban your smart phone, computer and TV from your bedroom.