来源：
https://www.tesla.com/zh_TW/blog/sentry-mode-guarding-your-tesla
Sentry Mode: Guarding Your Tesla
The Tesla Team 2019 年 2 月 13 日
According to federal statistics, there was an estimated one motor vehicle
theft or attempted theft every 40.8 seconds in the United States in 2017—
and that doesn’t even include the vast number of car break-ins that happen
nationwide. To further enhance the security of our vehicles and give our
customers additional peace of mind, today we’re starting to roll out a new
safeguard – Sentry Mode – to protect against break-ins and theft.
Sentry Mode adds a unique layer of protection to Tesla vehicles by
continuously monitoring the environment around a car when it’s left
unattended. When enabled, Sentry Mode enters a “Standby” state, like many
home alarm systems, which uses the car’s external cameras to detect
potential threats. If a minimal threat is detected, such as someone leaning
on a car, Sentry Mode switches to an “Alert” state and displays a message
on the touchscreen warning that its cameras are recording. If a more severe
threat is detected, such as someone breaking a window, Sentry Mode switches
to an “Alarm” state, which activates the car alarm, increases the
brightness of the center display, and plays music at maximum volume from the
car’s audio system.
If a car switches to “Alarm” state, owners will also receive an alert from
their Tesla mobile app notifying them that an incident has occurred. They’ll
be able to download a video recording of an incident (which begins 10 minutes
prior to the time a threat was detected) by inserting a formatted USB drive
into their car before they enable Sentry Mode.
Sentry Mode must be enabled each time a driver wants to use the feature by
going to Controls > Safety & Security > Sentry Mode. The feature will begin
rolling out today to U.S. Model 3 vehicles, followed by Model S and Model X
vehicles that were built after August 2017.
While no alarm system can prevent against all vehicle thefts, break-ins and
threats, we hope that with Sentry Mode and our other security features, your
Tesla will be even more secure.
简单说一下他介绍的功能：
启用了哨兵模式之后，在"Standby"状态会使用镜头来检测潜在的威胁
若遇到像有人靠近车这种状况，哨兵模式会切换到"Alert"状态
在萤幕上显示一条讯息，警告其镜头正在录影
如果有更严重的威胁，例如有人打破车窗，哨兵模式会切换到"Alarm"状态
让汽车警报器响起、增加萤幕的亮度、并用最大音量播放音乐
而且车主也会收到警报讯息说车子已经处于"Alarm"状态
除了哨兵模式外，最近应该也会接着更新"狗狗模式"
(可让宠物安全的待在车内)