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Adaptive steganography technique to secure patient confidential information using ECG signal

In this paper, we propose a method of protecting patient information using adaptive steganography technique on ECG (Electrocardiogram) signal. The process of embedding information uses the LSB (Least Significant Bit) matching algorithm to reduce the change on the cover object. Patient information is only embedded in the signal between the T-P wave (resting heart) to prevent the interfere with important features of the ECG signal. Experimental results show that the healthcare information is extracted accurately while the invisibility of secret data is significantly improved.