Probe Scanners,
Exploration is great content, but it’s limited by practical constraints. You can’t roam freely because many sites have ship-size limits, require nearby assets, or even multiboxing (e.g., AEGIS and gas sites, where uncompressed gas becomes a liability). As a result, exploration is effectively incentivized to stay in your home and nearby systems. On top of that, signatures don’t stay scanned after relogging, so you end up rescanning the same systems multiple times a day. Help?
Hello 
The constraints on exploration come more from logistics and QoL than from risk. Ship-size limits and site mechanics push specialization, but they also discourage roaming and favor staying local. Gas sites especially punish solo mobility since uncompressed gas ties you to assets or alts. Signature rescanning is meant to keep intel temporary, but it becomes repetitive with frequent relogs. Exploration doesn’t need to be safer — it needs less tedium and fewer logistical hoops to stay enjoyable. 
There are plenty of sites you can do in an exploration frigate without swapping ships.
Skip the ones that require other ships if you’re not near a place where you can swap ships.
Or stay near a base with spare ships if you wish to be able to swap ships.
Or, bring an exploration ship like the Odysseus and mobile depot so you can huff gas, fight and do relic and data sites. You could even explore with a friend in an Odysseus and have spare ships to swap between in the ship maintenance bay.
Plenty of meaningful choices to make.
Problem solved?
Open the built in Notepad utility, after scanning the cosmic sigs, drag and drop to Notepad. Next time you need to scan simply compare notes. You could also drop a location marker on each site, or take a screen shot. There are several ways to avoid scanning the same thing over and over.
I did this when I lived inside a wormhole. I only scanned once to twice per day. Very little changes over 24 hours inside wormholes. The anomalies only clear when they get completed by a user or the system resets them.
Fly safe o7