Key legal question
Whether refusing file access and time to supplement the prisoner's cantonal appeal violated the right to be heard.
Extracted holding
Yes. In a case with a very short appeal period, a timely filed pro se appeal by a detainee may be supplemented after file inspection; denying this request breached Article 29(2) BV.
Extracted reasoning
The request was not abusive: the appellant was a lay detainee facing a 24-hour deadline, had promptly asked for access to the file, and expressly reserved the right to file reasons after inspection. The cantonal authority should have granted access and a short period for supplementation.