Amelia stared blankly before asking, "If I'm not wrong, it hadn't recorded your mana signature, right?"
This lock has only been invented around 8 months ago.
And at that time, it had already caused quite a stir because people felt that they would have additional security in many things.
After all, everyone's mana signature is different.
Just like fingerprint.
No one has the same fingerprint in the entire world.
The mana signature was the same and they already have device to record the mana signature through inputting mana. Though, the amount of mana needed to input was still not efficient enough and the researchers were still working on it.
But it was good enough for them.
After all, they would not really record more people's mana signature into this system.
And when this device was made, Riya was clearly still in the other world. Samuel had only recorded his mana signature these days after his return since he wanted to modify the training grounds.
But how about Riya?
How did she bypass this security?
Amelia was stunned.
"Ah, yes." Riya nodded.
"Then how did you open it?!"
"…Mel, I think I need to tell you that this security system is nothing in front of a rune master." Riya shook her head helplessly.
Through using runes and inputting her mana, she simply added her mana signature into the list of the recorded mana signature. This way, she would be able to open the door too without the need to wait for others.
Perhaps other magicians would be confused how to deal with this lock.
But Riya's runes were very versatile and she herself could easily deal with this kind of lock within seconds.
No, a split second was enough.
After all, her speed of drawing runes was exceptional.
"…I'll consult this with the researchers later," Amelia muttered to herself as she looked at the lock resentfully.
She was absolutely sure that the researchers would be devastated.
Their proudest invention was cracked by Riya in just a split second. It seemed that their hard work over the years would turn to waste.
Riya didn't pay attention to Amelia's resentful look.
Anyway, there were not many rune masters like her who could do this.
The other returnee who could replicate her action should be Leon since he's a weapon refiner. This kind of device would be nothing much in their eyes and he could easily crack it if he wanted to.
Bang!
Inside the training ground, mana surged up and Riya easily formed a shield for herself and Amelia behind her.
"Ruben said that he wants to ask for some advice when you come back," Arnold added.
Learning by himself was not impossible, but Ruben still needed guidance from his master for some things.
"I'll see him later."
Riya glanced at Samuel and then asked, "Shall I report to your father first?"
"I'll take you to see City A Base first," Samuel said without hesitation and then grabbed Riya's hand before walking out of the training ground.
Arnold saw this scene and chuckled.
"Arnold, let's go to the research institute."
"Why?"
"I need to tell them that their lock is not useful in front of a rune master!" Amelia recounted how Riya unlocked the door in an instant.
It was so fast that Amelia felt that she didn't even had the chance to blink.
Arnold was speechless.
"Mel, you don't think that other people can replicate what Riya did, right?"
"Ah?"
"Just think about how other rune masters are doing… We don't need to replace the lock anytime soon. But we can talk to them about designing a better one that can even block rank 8 magician."

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