Answer:
Pedometer
Step-by-step explanation:
A pedometer is a small and light device that has the ability to count the steps that a person takes during the day, in addition to estimating the degree of physical activity of that person. With the use of this device, individuals are more motivated to take an amount of steps that will be beneficial to their health, so they decide to leave the house a little and go for a walk or run. And as it is a small and light device it can be taken everywhere without causing discomfort to the individual. This device is a great indication for Laura's grandmother.