Methods of displaying and keeping track of the information gathered are as important as ease of use. While embedded sensor systems like tatoos are certainly on the horizon, pulse monitors like those of Polar or Omron are nearly as convenient. There are a number of different heart rate monitors available that connect with your computer and share information for recordkeeping. Simple paper and pencil systems can also work and examples will follow along with forms you can copy and use.
Blood pressure and pulse recording systems are even more sophisticated. I bought up a $35 dollar unit that automatically takes a reading, features two recording memories, and comes with a USB cable and software that tracks and displays data with a great deal of flexibility.
Two slightly more sophisticated blood pressure monitoring systems:
and looking market ready and displayed very well: