Blue Light Emission Linked to Chronic Insomnia, Study More than 70% young generation uses smartphone and tablets to access their daily life services, including food, an eBook, cabs and so on. More than millions of people have a daily habit of using their smartphone, tablet or laptop before sleep in the bedroom, a new study suggests. Using digital devices in your bedroom may rob your sleep quality. Millions of people buy Zolpidem online in Ireland, the UK and the US to deal with their severe and chronic insomnia symptoms. In many studies, it is reported that people who experience sleep troubles in their daily routines have a greater risk of serious health consequences. Entertainment factors such as smartphones, tablets and laptops emit blue light from their screens, which causes irregular levels of melatonin in the body.