John Hancock has ceased underwriting traditional life insurance policies in favor of new interactive life insurance policies. Interactive policies will be packaged under the Vitality program which features fitness and health data tracking through wearable Internet of Things (IoT) devices such as smart watches and smartphones. For the time being customers will not be required to log their fitness tracking data, and for those concerned about premium increases can be reassured that there are laws that force the insurance industry to "justify, in actuarial terms, its reasons for any rate increases or policy changes." Policyholders score premium discounts for hitting exercise targets tracked on wearable devices such as a Fitbit or Apple Watch and get gift cards for retail stores and other perks by logging their workouts and healthy food purchases in an app. In theory, everybody wins, as policyholders are incentivized to adopt healthy habits and insurance companies collect more premiums and pay less in claims if customers live longer.