‘Defacing’ is the proper term in vexillology.
From the Wikipedia article on the term:
In vexillology, defacement is the addition of a symbol or charge to a flag. For example, the Australian flag is the British Blue Ensign defaced with a Southern Cross in the fly.
In the context of vexillology, the word "deface" carries no negative connotations, in contrast to general usage. It simply indicates a differentiation of the flag from that of another owner by addition of elements. For example, many state flags are formed by defacing the national flag with a coat of arms.
I'll try to send text to the very beginning of the seven-day period, sending each message on two-hour intervals sent to the point in time one second after the last message.
Let's assume that the seven-day period starts on
2025-05-12 08:00:00
.The first message will be sent two hours after the seven day period starts, and every two hours thereafter. This first message will be sent on
2025-05-12 10:00:00
and will include:The messages will be sent to the time one second after the previous message was sent. Hence, continuing the example, the next message would be sent on
2025-05-12 12:00:00
to2025-05-12 08:00:02
, and so on.The messages will follow the same format as the first one:
If for some reason I am unable to send any messages (for example, I have been asleep, or out of network coverage area) when I should (two hours have passed since the last message), I will send a message immediately when I'm able. This message will be sent to the time one second after the last sent message. So continuing the example, if the last message was sent on
2025-05-12 22:00:00
, to2025-05-12 08:00:07
, and I'm asleep until2025-05-13 09:00:00
, I will immediately send a message to2025-05-12 08:00:08
.With this, assuming I survive for seven days (exactly) and stay awake the entire time, I will receive the last message before
2025-05-12 08:01:24
. The timestamps of the last message will also give me a good indication if I survived the seven days, or how long I survived. If I continue receiving messages past that, maybe my future self messed up, or there's something more going on, or my future self just decided it's a good idea to just continue. Nevertheless, I have advance notice of what happens to me.Of course I will try not to lose my phone. With advance notice, I will try to stay as safe as possible without deviating much from the timeline. Also, I will try to figure out what's going on, but only up to the point that I can keep myself safe.