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You can only use tobacco products (including smokeless tobacco) in DTUAs.

This depends on the device and user behaviour

or use Features, Description, Q&A, Specs & Installation Multi-Device Power Solution

S.s 2022 study, Association between family or peer views towards tobacco use and past 30-day smoking cessation among adults with mental health problems, Individuals whose family or peers held neutral or positive views towards tobacco use were 32% less likely to quit smoking compared to those surrounded by negative views (adjusted OR: 0.68)

Although a blood test is an invasive procedure, measuring cotinine in the blood is the most reliable way to detect nicotine use