In an increasingly interconnected world, ensuring secure information transmission is paramount. Threats such as data manipulation and impersonation impact applications like e-voting and digital currency. Digital signatures offer crucial non-repudiation and verifiability, especially in IoT contexts. Traditional signature schemes rely on discrete logarithm problems and integer factorization for security, making them widely used. Yet, quantum computers threaten their security, urging a proactive stance to protect IoT communication in the quantum age. Therefore, lightweight IoT applications can benefit from adopting post-quantum signatures. This paper delves into hash-based signature schemes as lightweight alternatives for securing IoT devices, utilizing the EDAS technique for a comprehensive comparative analysis. The goal is to provide efficient cryptographic solutions tailored to lightweight IoT needs.