Embodiments of the present invention provide methods and system for dynamically sharing multimedia content information. The first arm contains a top portion, a side portion, and a bottom portion, the top portion of the first arm containing a first opening. This synchronous tag can hide one or more page elements that are to be modified by a subsequent asynchronous personalization tag. When the phase-locked loop circuit starts, the control unit causes a detection output signal from the dual-mode phasefrequency detector to correspond to a digital signal from the digital phasefrequency detector. Physiological information, such as cardiac arrhythmia, may be derived based on the detected pulse rhythm abnormality.