Evaluation of possibilities of java cryptography architecture and java mail libraries usage to encrypt e-mail messages. - Piotr Kopniak (Ann. UMCS Informatica, 2004)

Robustness of data hiding in image the Fourier spectrum. - Piotr Kopniak (Ann. UMCS Informatica, 2006)

New steerable pyramid steganography algorithm resistant to the Fisher Linear Discriminant steganalysis. - Piotr Kopniak (Ann. UMCS Informatica, 2008)

Java wrapper for Xsens motion capture system SDK. - Piotr Kopniak (HSI, 2014)

Neural Network and Kalman Filter Use for Improvement of Inertial Distance Determination. - Piotr Kopniak; Marek Kaminski (ICMMI, 2015)

Differentiating horse walk and trot on the basis of inertial motion capture. - Piotr Kopniak; Krzysztof Bocian (HSI, 2016)

Natural interface for robotic arm controlling based on inertial motion capture. - Piotr Kopniak; Marek Kaminski (HSI, 2016)