The purpose of this study is to evaluate the effect of 10 sessions of anodal transcranial Direct Current Stimulation (tDCS - 1 mA) applied to left vs right CDLPF of tobacco-dependent subjects compared to the application of a placebo tDCS (sham procedure) on the craving, which is evaluated by the item 1 of Fagerström test between day 1 and day 10. Craving is also evaluated 1 month post-treatment.