Ubercart Terms Checkbox
This module simple add required checkbox in Ubercart checkout step field with link to terms and conditions.
You can change link by translation interface: admin/config/regional/translate/translate or implement THEME_uc_terms_checkbox hook.
Inspired by https://journal.tinkoff.ru/personalnye-dannye/
Dependencies
Configuration
Just enable the new created pane in admin/store/settings/checkout.