As far as the Aadhar card is concerned, it identifies you as your identity through your fingerprint and retina of eyes, and for this, the signature, etc. information may be less important but the PAN card not has some kind of biometric identification. Therefore, it would be appropriate that you get your signature changed on the PAN card. For this, you have the following suggestions -
You can get the correction done online, for you can take the help of the https://www.onlineservices.nsdl.com website. After that you have to go to the application type, it will give you another option, going to this option you will have to click on Changes or Correction in existing PAN Data. After that, you will be asked for some details about yourself. Fill in these details.
When you will fill in these details then you have to enter the captcha. When all this is done then you have to click on submit. For verification, you will have to provide Aadhaar, passport, or other documents or upload them on the site. After this, you will be given the option to make a payment. When you make the payment, you will get a transaction number. After that, you will get a form. In that, you have to tell which PAN card mistake you want to get corrected. After filling in all this information you submit it. After about 15 days you will get your new PAN card along with the update.
If you want, you can also go to any cyber or related government office to get the PAN card updated, here you will be given only a form in which you will have to fill it with some information that you want to change your signature and at the same time You have to provide a document in which you have the same signature. After submitting the form, the further process is done by the people of the department and after a certain time, your updated PAN card will come to your permanent address.