Cardiovascular diseases account for one third of global deaths. Electrocardiography (ECG) is a key tool in cardiovascular evaluation, but various factors, including body position and orientation during recording, can influence ECG signals, impeding correct diagnosis. We developed a portable device for acquiring three orthogonal ECG signals (vectorcardiography - VCG) which is also equipped with an integrated IMU sensor, allowing a more profound analysis of posture related changes in cardiac activity. We evaluated eight young subjects across six different body postures. We computed timing offsets required to synchronize the inertial and VCG signals. The analysis allowed us to observe changes in the orientation of the cardiac vector and significant alterations in the ST segment. Our device also successfully captured gyrocardiography (GCG) and seismocardiography (SCG) signals. Our measurements lead us to conclude that these devices could be implemented in routine diagnostics in emergency rooms and hospitals located in remote areas, thereby improving access to care for the entire population.