PTON has followed through on its agreement with the CPSC to improve safety of its treadmills by requiring users to unlock the devices with a four-digit PIN code, dubbed “Tread Lock,” after 45 seconds of inactivity. The feature is part of an automatic software upgrade that is being pushed out to all Tread+ treadmills. Lower-priced Tread models, which have only been sold outside the U.S., will get the ... Log in to view full article.