Please help us help you and fill where relevant:
Your LimeSurvey version: 6.3.9+231211
Own server or LimeSurvey hosting: Own Server
Survey theme/template: Fruity
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Hello,
We are building a survey to show on a tablet to use it as a satisfaction tab. Now our question is for some reason if a Respondents leave it in the middle, we need to restart the survey in this case. It would be easy if there was a "Home" button or we could terminate the survey session so that a new survey can be initialized. We have gone through the "Allow backward navigation" option, It won't work as we have almost 9 questions. 

Please suggest a workaround

Thanks in advance

Just put in a link with the survey URL, containing the newtest=Y parameter.