Vector Oblivious Linear Evaluation (VOLE) has become a cornerstone in contemporary cryptography, facilitating the development of streamlined and scalable Zero-Knowledge Proof (ZKP) via innovative approaches like VOLE-in-the-Head (VOLEitH). In this work, we focus on the design and analysis of digital signature schemes built upon VOLE, with a particular emphasis on existing VOLEitH-based constructions. These schemes offer linear proof sizes and low communication overhead, making them attractive for deployment in resource-constrained and latency-sensitive environments. We systematically examine the structure, efficiency, and security of current VOLEitH-based signature schemes, highlighting their strengths and limitations. To demonstrate practical relevance, we explore their integration into healthcare systems, where data integrity and confidentiality are critical.