Ask HN: CRM / Tools for Business Cards / Leads / Contact Management

Just wondering if anyone is in the Sales / Marketing where they have this problem. Even my worst job in pervious years would only have ~100 clients contact, which is a lot but still (barely) manageable. Right now in my new job I have to jiggle with few hundreds of contact point and business cards and it quickly becomes and unmanageable mess.

I am wondering if anyone has any recommendation on CRM or tools to manage these. Preferably where the Data I get to keep it myself / on my phone.

Right now I am using good old fashion Excel Spreadsheet.

I am wondering if there are any automatic scanner where I could throw a pack of Business Cards and it will scan it into an App. Most current Apps want me to take a photo one by one.