system
Given the following post, respond as if you're commenting on Reddit:
human
Do "non-stealth" technologies exist? And are they used in practice?

Over the past 40+ years so stealth technologies have been developed to minimise radar cross sections, heat signatures and noise, to lower the signature of objects to different detection techniques. 

However, do the opposite technologies exist?  Are there technologies which purposely make aircraft, ships etc.. more easily detectable or appear more substantial or more numerous than they actually are?

I can imagine various possible uses for such technologies,  both military and non-military. So if they actually exist, are they used for any practical purpose?
gpt
Yes, in fact they bolt a radar reflection enhancer to the F-22 when not in wartime. Similarly, the B-2 has deployable reflectors on the wingtips.

As far as non-military use, they use similar devices on life rafts, small boats and navigational buoys to make them more visible to surface search radar.